diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4f85653f2..fa99c6ff7 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -74,7 +74,7 @@ option(WITH_TIMVX "Whether to compile for TIMVX deploy." OFF)
 option(WITH_KUNLUNXIN "Whether to compile for KunlunXin XPU deploy." OFF)
 option(WITH_TESTING "Whether to compile with unittest." OFF)
 option(WITH_CAPI "Whether to compile with c api." OFF)
-
+option(WITH_CSHARPAPI "Whether to compile with c# api" OFF)
 ############################# Options for Android cross compiling #########################
 if(ANDROID)
   option(WITH_OPENCV_STATIC "Whether to use OpenCV static lib for Android." OFF)
@@ -424,8 +424,15 @@ if(WITH_CAPI)
   endif()
 endif()
 
+if(WITH_CSHARPAPI)
+  if(MSVC)
+  add_subdirectory(${PROJECT_SOURCE_DIR}/csharp)
+  endif()
+endif()
+
 
 configure_file(${PROJECT_SOURCE_DIR}/FastDeploy.cmake.in ${PROJECT_SOURCE_DIR}/FastDeploy.cmake @ONLY)
+configure_file(${PROJECT_SOURCE_DIR}/FastDeployCSharp.cmake.in ${PROJECT_SOURCE_DIR}/FastDeployCSharp.cmake @ONLY)
 configure_file(${PROJECT_SOURCE_DIR}/python/fastdeploy/c_lib_wrap.py.in ${PROJECT_SOURCE_DIR}/python/fastdeploy/c_lib_wrap.py)
 configure_file(${PROJECT_SOURCE_DIR}/python/scripts/process_libraries.py.in ${PROJECT_SOURCE_DIR}/python/scripts/process_libraries.py)
 
@@ -678,6 +685,7 @@ install(
   ${PROJECT_SOURCE_DIR}/ThirdPartyNotices.txt
   ${PROJECT_SOURCE_DIR}/VERSION_NUMBER
   ${PROJECT_SOURCE_DIR}/FastDeploy.cmake
+  ${PROJECT_SOURCE_DIR}/FastDeployCSharp.cmake
   ${PROJECT_SOURCE_DIR}/cmake/FastDeployConfig.cmake
   ${PROJECT_SOURCE_DIR}/cmake/utils.cmake
   ${PROJECT_SOURCE_DIR}/cmake/openmp.cmake
diff --git a/FastDeployCSharp.cmake b/FastDeployCSharp.cmake
new file mode 100644
index 000000000..3a3708140
--- /dev/null
+++ b/FastDeployCSharp.cmake
@@ -0,0 +1,14 @@
+list(APPEND FASTDEPLOY_DOTNET_REFERENCES 
+    "Microsoft.CSharp"
+    "System"
+    "System.Core"
+    "System.Data"
+    "System.Deployment"
+    "System.Drawing"
+    "System.Net.Http"
+    "System.Xml"
+    "System.Reflection"
+    "${CMAKE_CURRENT_LIST_DIR}/csharp_lib/fastdeploy_csharp.dll")
+
+set(FASTDEPLOY_PACKAGE_REFERENCES "OpenCvSharp4_4.7.0.20230115;OpenCvSharp4.runtime.win_4.7.0.20230115")
+
diff --git a/FastDeployCSharp.cmake.in b/FastDeployCSharp.cmake.in
new file mode 100644
index 000000000..43f798b36
--- /dev/null
+++ b/FastDeployCSharp.cmake.in
@@ -0,0 +1,13 @@
+list(APPEND FASTDEPLOY_DOTNET_REFERENCES
+    "Microsoft.CSharp"
+    "System"
+    "System.Core"
+    "System.Data"
+    "System.Deployment"
+    "System.Drawing"
+    "System.Net.Http"
+    "System.Xml"
+    "System.Reflection"
+    "${CMAKE_CURRENT_LIST_DIR}/csharp_lib/fastdeploy_csharp.dll")
+
+set(FASTDEPLOY_PACKAGE_REFERENCES "OpenCvSharp4_4.7.0.20230115;OpenCvSharp4.runtime.win_4.7.0.20230115")
diff --git a/csharp/CMakeLists.txt b/csharp/CMakeLists.txt
new file mode 100644
index 000000000..1e305f474
--- /dev/null
+++ b/csharp/CMakeLists.txt
@@ -0,0 +1,58 @@
+# Copyright (c) 2023 PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+##################################### Building: FastDeploy C# API #######################################
+PROJECT(fastdeploy_csharp CSharp)
+
+CMAKE_MINIMUM_REQUIRED (VERSION 3.10)
+
+option(ENABLE_VISION "Whether to enable vision models usage." OFF)
+
+message("fastdeploy_csharp_SOURCE_DIR: ${fastdeploy_csharp_SOURCE_DIR}")
+file(GLOB_RECURSE DEPLOY_CSHARPAPI_SRCS ${fastdeploy_csharp_SOURCE_DIR}/fastdeploy/*.cs)
+if(NOT ENABLE_VISION)
+    file(GLOB_RECURSE DEPLOY_VISION_CSHARPAPI_SRCS ${fastdeploy_csharp_SOURCE_DIR}/fastdeploy/vision/*.cs)
+    list(REMOVE_ITEM DEPLOY_CSHARPAPI_SRCS ${DEPLOY_VISION_CSHARPAPI_SRCS})
+endif()
+
+# Define the DLL target, including all relevant project files.
+add_library(${PROJECT_NAME} SHARED ${DEPLOY_CSHARPAPI_SRCS})
+
+# Set the C# language version (defaults to 3.0 if not set).
+set(CMAKE_CSharp_FLAGS "/langversion:10")
+# Add in some .NET reference libraries.
+set_property(TARGET ${PROJECT_NAME} PROPERTY VS_DOTNET_REFERENCES
+    "Microsoft.CSharp"
+    "System"
+    "System.Core"
+    "System.Data"
+    "System.Deployment"
+    "System.Drawing"
+    "System.Net.Http"
+    "System.Xml"
+)
+
+
+set_property(TARGET ${PROJECT_NAME}
+    PROPERTY VS_PACKAGE_REFERENCES  "OpenCvSharp4_4.7.0.20230115"
+)
+
+##################################### Installing: FastDeploy C# API #######################################
+
+install(
+    TARGETS ${PROJECT_NAME}
+    LIBRARY DESTINATION csharp_lib
+    ARCHIVE DESTINATION csharp_lib
+    RUNTIME DESTINATION csharp_lib
+)
diff --git a/csharp/fastdeploy/enum_varaibles.cs b/csharp/fastdeploy/enum_varaibles.cs
new file mode 100644
index 000000000..b0888b71c
--- /dev/null
+++ b/csharp/fastdeploy/enum_varaibles.cs
@@ -0,0 +1,53 @@
+// Copyright (c) 2023 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+namespace fastdeploy {
+
+public enum ModelFormat {
+  AUTOREC,      ///< Auto recognize the model format by model file name
+  PADDLE,       ///< Model with paddlepaddle format
+  ONNX,         ///< Model with ONNX format
+  RKNN,         ///< Model with RKNN format
+  TORCHSCRIPT,  ///< Model with TorchScript format
+  SOPHGO,       ///< Model with SOPHGO format
+}
+
+public enum rknpu2_CpuName {
+  RK356X = 0, /* run on RK356X. */
+  RK3588 = 1, /* default,run on RK3588. */
+  UNDEFINED,
+}
+
+public enum rknpu2_CoreMask {
+  RKNN_NPU_CORE_AUTO = 0,  //< default, run on NPU core randomly.
+  RKNN_NPU_CORE_0 = 1,     //< run on NPU core 0.
+  RKNN_NPU_CORE_1 = 2,     //< run on NPU core 1.
+  RKNN_NPU_CORE_2 = 4,     //< run on NPU core 2.
+  RKNN_NPU_CORE_0_1 =
+      RKNN_NPU_CORE_0 | RKNN_NPU_CORE_1,  //< run on NPU core 1 and core 2.
+  RKNN_NPU_CORE_0_1_2 =
+      RKNN_NPU_CORE_0_1 | RKNN_NPU_CORE_2,  //< run on NPU core 1 and core 2.
+  RKNN_NPU_CORE_UNDEFINED,
+}
+
+public enum LitePowerMode {
+  LITE_POWER_HIGH = 0,       ///< Use Lite Backend with high power mode
+  LITE_POWER_LOW = 1,        ///< Use Lite Backend with low power mode
+  LITE_POWER_FULL = 2,       ///< Use Lite Backend with full power mode
+  LITE_POWER_NO_BIND = 3,    ///< Use Lite Backend with no bind power mode
+  LITE_POWER_RAND_HIGH = 4,  ///< Use Lite Backend with rand high mode
+  LITE_POWER_RAND_LOW = 5    ///< Use Lite Backend with rand low power mode
+}
+
+}
\ No newline at end of file
diff --git a/csharp/fastdeploy/runtime_option.cs b/csharp/fastdeploy/runtime_option.cs
new file mode 100644
index 000000000..781365558
--- /dev/null
+++ b/csharp/fastdeploy/runtime_option.cs
@@ -0,0 +1,541 @@
+// Copyright (c) 2023 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+using System;
+using System.IO;
+using System.Runtime.InteropServices;
+
+namespace fastdeploy {
+
+public class RuntimeOption {
+
+  public RuntimeOption() {
+    fd_runtime_option_wrapper = FD_C_CreateRuntimeOptionWrapper();
+  }
+
+  ~RuntimeOption() {
+    FD_C_DestroyRuntimeOptionWrapper(fd_runtime_option_wrapper);
+  }
+
+  public void SetModelPath(string model_path, string params_path = "",
+                           ModelFormat format = ModelFormat.PADDLE) {
+    FD_C_RuntimeOptionWrapperSetModelPath(fd_runtime_option_wrapper, model_path,
+                                          params_path, format);
+  }
+
+  public void SetModelBuffer(string model_buffer, string params_buffer = "",
+                             ModelFormat format = ModelFormat.PADDLE) {
+    FD_C_RuntimeOptionWrapperSetModelBuffer(
+        fd_runtime_option_wrapper, model_buffer, params_buffer, format);
+  }
+
+  public void UseCpu() {
+    FD_C_RuntimeOptionWrapperUseCpu(fd_runtime_option_wrapper);
+  }
+
+  public void UseGpu(int gpu_id = 0) {
+    FD_C_RuntimeOptionWrapperUseGpu(fd_runtime_option_wrapper, gpu_id);
+  }
+
+  public void
+  UseRKNPU2(rknpu2_CpuName rknpu2_name = rknpu2_CpuName.RK3588,
+            rknpu2_CoreMask rknpu2_core = rknpu2_CoreMask.RKNN_NPU_CORE_0) {
+    FD_C_RuntimeOptionWrapperUseRKNPU2(fd_runtime_option_wrapper, rknpu2_name,
+                                       rknpu2_core);
+  }
+
+  public void UseTimVX() {
+    FD_C_RuntimeOptionWrapperUseTimVX(fd_runtime_option_wrapper);
+  }
+
+  public void UseAscend() {
+    FD_C_RuntimeOptionWrapperUseAscend(fd_runtime_option_wrapper);
+  }
+
+  public void
+  UseKunlunXin(int kunlunxin_id = 0, int l3_workspace_size = 0xfffc00,
+               bool locked = false, bool autotune = true,
+               string autotune_file = "", string precision = "int16",
+               bool adaptive_seqlen = false, bool enable_multi_stream = false) {
+    FD_C_RuntimeOptionWrapperUseKunlunXin(
+        fd_runtime_option_wrapper, kunlunxin_id, l3_workspace_size, locked,
+        autotune, autotune_file, precision, adaptive_seqlen,
+        enable_multi_stream);
+  }
+
+  public void UseSophgo() {
+    FD_C_RuntimeOptionWrapperUseSophgo(fd_runtime_option_wrapper);
+  }
+
+  public void SetExternalStream(IntPtr external_stream) {
+    FD_C_RuntimeOptionWrapperSetExternalStream(fd_runtime_option_wrapper,
+                                               external_stream);
+  }
+
+  public void SetCpuThreadNum(int thread_num) {
+    FD_C_RuntimeOptionWrapperSetCpuThreadNum(fd_runtime_option_wrapper,
+                                             thread_num);
+  }
+
+  public void SetOrtGraphOptLevel(int level = -1) {
+    FD_C_RuntimeOptionWrapperSetOrtGraphOptLevel(fd_runtime_option_wrapper,
+                                                 level);
+  }
+
+  public void UsePaddleBackend() {
+    FD_C_RuntimeOptionWrapperUsePaddleBackend(fd_runtime_option_wrapper);
+  }
+
+  public void UsePaddleInferBackend() {
+    FD_C_RuntimeOptionWrapperUsePaddleInferBackend(fd_runtime_option_wrapper);
+  }
+
+  public void UseOrtBackend() {
+    FD_C_RuntimeOptionWrapperUseOrtBackend(fd_runtime_option_wrapper);
+  }
+
+  public void UseSophgoBackend() {
+    FD_C_RuntimeOptionWrapperUseSophgoBackend(fd_runtime_option_wrapper);
+  }
+
+  public void UseTrtBackend() {
+    FD_C_RuntimeOptionWrapperUseTrtBackend(fd_runtime_option_wrapper);
+  }
+
+  public void UsePorosBackend() {
+    FD_C_RuntimeOptionWrapperUsePorosBackend(fd_runtime_option_wrapper);
+  }
+
+  public void UseOpenVINOBackend() {
+    FD_C_RuntimeOptionWrapperUseOpenVINOBackend(fd_runtime_option_wrapper);
+  }
+
+  public void UseLiteBackend() {
+    FD_C_RuntimeOptionWrapperUseLiteBackend(fd_runtime_option_wrapper);
+  }
+
+  public void UsePaddleLiteBackend() {
+    FD_C_RuntimeOptionWrapperUsePaddleLiteBackend(fd_runtime_option_wrapper);
+  }
+
+  public void SetPaddleMKLDNN(bool pd_mkldnn = true) {
+    FD_C_RuntimeOptionWrapperSetPaddleMKLDNN(fd_runtime_option_wrapper,
+                                             pd_mkldnn);
+  }
+
+  public void EnablePaddleToTrt() {
+    FD_C_RuntimeOptionWrapperEnablePaddleToTrt(fd_runtime_option_wrapper);
+  }
+
+  public void DeletePaddleBackendPass(string delete_pass_name) {
+    FD_C_RuntimeOptionWrapperDeletePaddleBackendPass(fd_runtime_option_wrapper,
+                                                     delete_pass_name);
+  }
+
+  public void EnablePaddleLogInfo() {
+    FD_C_RuntimeOptionWrapperEnablePaddleLogInfo(fd_runtime_option_wrapper);
+  }
+
+  public void DisablePaddleLogInfo() {
+    FD_C_RuntimeOptionWrapperDisablePaddleLogInfo(fd_runtime_option_wrapper);
+  }
+
+  public void SetPaddleMKLDNNCacheSize(int size) {
+    FD_C_RuntimeOptionWrapperSetPaddleMKLDNNCacheSize(fd_runtime_option_wrapper,
+                                                      size);
+  }
+
+  public void SetOpenVINODevice(string name = "CPU") {
+    FD_C_RuntimeOptionWrapperSetOpenVINODevice(fd_runtime_option_wrapper, name);
+  }
+
+  public void SetLiteOptimizedModelDir(string optimized_model_dir) {
+    FD_C_RuntimeOptionWrapperSetLiteOptimizedModelDir(fd_runtime_option_wrapper,
+                                                      optimized_model_dir);
+  }
+
+  public void SetLiteSubgraphPartitionPath(
+      string nnadapter_subgraph_partition_config_path) {
+    FD_C_RuntimeOptionWrapperSetLiteSubgraphPartitionPath(
+        fd_runtime_option_wrapper, nnadapter_subgraph_partition_config_path);
+  }
+
+  public void SetLiteSubgraphPartitionConfigBuffer(
+      string nnadapter_subgraph_partition_config_buffer) {
+    FD_C_RuntimeOptionWrapperSetLiteSubgraphPartitionConfigBuffer(
+        fd_runtime_option_wrapper, nnadapter_subgraph_partition_config_buffer);
+  }
+
+  public void SetLiteContextProperties(string nnadapter_context_properties) {
+    FD_C_RuntimeOptionWrapperSetLiteContextProperties(
+        fd_runtime_option_wrapper, nnadapter_context_properties);
+  }
+
+  public void SetLiteModelCacheDir(string nnadapter_model_cache_dir) {
+    FD_C_RuntimeOptionWrapperSetLiteModelCacheDir(fd_runtime_option_wrapper,
+                                                  nnadapter_model_cache_dir);
+  }
+
+  public void SetLiteMixedPrecisionQuantizationConfigPath(
+      string nnadapter_mixed_precision_quantization_config_path) {
+    FD_C_RuntimeOptionWrapperSetLiteMixedPrecisionQuantizationConfigPath(
+        fd_runtime_option_wrapper,
+        nnadapter_mixed_precision_quantization_config_path);
+  }
+
+  public void EnableLiteFP16() {
+    FD_C_RuntimeOptionWrapperEnableLiteFP16(fd_runtime_option_wrapper);
+  }
+
+  public void DisableLiteFP16() {
+    FD_C_RuntimeOptionWrapperDisableLiteFP16(fd_runtime_option_wrapper);
+  }
+
+  public void EnableLiteInt8() {
+    FD_C_RuntimeOptionWrapperEnableLiteInt8(fd_runtime_option_wrapper);
+  }
+
+  public void DisableLiteInt8() {
+    FD_C_RuntimeOptionWrapperDisableLiteInt8(fd_runtime_option_wrapper);
+  }
+
+  public void SetLitePowerMode(LitePowerMode mode) {
+    FD_C_RuntimeOptionWrapperSetLitePowerMode(fd_runtime_option_wrapper, mode);
+  }
+
+  public void EnableTrtFP16() {
+    FD_C_RuntimeOptionWrapperEnableTrtFP16(fd_runtime_option_wrapper);
+  }
+
+  public void DisableTrtFP16() {
+    FD_C_RuntimeOptionWrapperDisableTrtFP16(fd_runtime_option_wrapper);
+  }
+
+  public void SetTrtCacheFile(string cache_file_path) {
+    FD_C_RuntimeOptionWrapperSetTrtCacheFile(fd_runtime_option_wrapper,
+                                             cache_file_path);
+  }
+
+  public void EnablePinnedMemory() {
+    FD_C_RuntimeOptionWrapperEnablePinnedMemory(fd_runtime_option_wrapper);
+  }
+
+  public void DisablePinnedMemory() {
+    FD_C_RuntimeOptionWrapperDisablePinnedMemory(fd_runtime_option_wrapper);
+  }
+
+  public void EnablePaddleTrtCollectShape() {
+    FD_C_RuntimeOptionWrapperEnablePaddleTrtCollectShape(
+        fd_runtime_option_wrapper);
+  }
+
+  public void DisablePaddleTrtCollectShape() {
+    FD_C_RuntimeOptionWrapperDisablePaddleTrtCollectShape(
+        fd_runtime_option_wrapper);
+  }
+
+  public void SetOpenVINOStreams(int num_streams) {
+    FD_C_RuntimeOptionWrapperSetOpenVINOStreams(fd_runtime_option_wrapper,
+                                                num_streams);
+  }
+
+  public void UseIpu(int device_num = 1, int micro_batch_size = 1,
+                     bool enable_pipelining = false, int batches_per_step = 1) {
+    FD_C_RuntimeOptionWrapperUseIpu(fd_runtime_option_wrapper, device_num,
+                                    micro_batch_size, enable_pipelining,
+                                    batches_per_step);
+  }
+
+  public IntPtr GetWrapperPtr() { return fd_runtime_option_wrapper; }
+
+  // Below are underlying C api
+  private IntPtr fd_runtime_option_wrapper;
+
+  [DllImport("fastdeploy.dll", EntryPoint = "FD_C_CreateRuntimeOptionWrapper")]
+  private static extern IntPtr FD_C_CreateRuntimeOptionWrapper();
+
+  [DllImport("fastdeploy.dll", EntryPoint = "FD_C_DestroyRuntimeOptionWrapper")]
+  private static extern void
+  FD_C_DestroyRuntimeOptionWrapper(IntPtr fd_runtime_option_wrapper);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperSetModelPath")]
+  private static extern void
+  FD_C_RuntimeOptionWrapperSetModelPath(IntPtr fd_runtime_option_wrapper,
+                                        string model_path, string params_path,
+                                        ModelFormat format);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperSetModelBuffer")]
+  private static extern void FD_C_RuntimeOptionWrapperSetModelBuffer(
+      IntPtr fd_runtime_option_wrapper, string model_buffer,
+      string params_buffer, ModelFormat format);
+
+  [DllImport("fastdeploy.dll", EntryPoint = "FD_C_RuntimeOptionWrapperUseCpu")]
+  private static extern void
+  FD_C_RuntimeOptionWrapperUseCpu(IntPtr fd_runtime_option_wrapper);
+
+  [DllImport("fastdeploy.dll", EntryPoint = "FD_C_RuntimeOptionWrapperUseGpu")]
+  private static extern void
+  FD_C_RuntimeOptionWrapperUseGpu(IntPtr fd_runtime_option_wrapper, int gpu_id);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperUseRKNPU2")]
+  private static extern void
+  FD_C_RuntimeOptionWrapperUseRKNPU2(IntPtr fd_runtime_option_wrapper,
+                                     rknpu2_CpuName rknpu2_name,
+                                     rknpu2_CoreMask rknpu2_core);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperUseTimVX")]
+  private static extern void
+  FD_C_RuntimeOptionWrapperUseTimVX(IntPtr fd_runtime_option_wrapper);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperUseAscend")]
+  private static extern void
+  FD_C_RuntimeOptionWrapperUseAscend(IntPtr fd_runtime_option_wrapper);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperUseKunlunXin")]
+  private static extern void FD_C_RuntimeOptionWrapperUseKunlunXin(
+      IntPtr fd_runtime_option_wrapper, int kunlunxin_id, int l3_workspace_size,
+      bool locked, bool autotune, string autotune_file, string precision,
+      bool adaptive_seqlen, bool enable_multi_stream);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperUseSophgo")]
+  private static extern void
+  FD_C_RuntimeOptionWrapperUseSophgo(IntPtr fd_runtime_option_wrapper);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperSetExternalStream")]
+  private static extern void
+  FD_C_RuntimeOptionWrapperSetExternalStream(IntPtr fd_runtime_option_wrapper,
+                                             IntPtr external_stream);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperSetCpuThreadNum")]
+  private static extern void
+  FD_C_RuntimeOptionWrapperSetCpuThreadNum(IntPtr fd_runtime_option_wrapper,
+                                           int thread_num);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperSetOrtGraphOptLevel")]
+  private static extern void
+  FD_C_RuntimeOptionWrapperSetOrtGraphOptLevel(IntPtr fd_runtime_option_wrapper,
+                                               int level);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperUsePaddleBackend")]
+  private static extern void
+  FD_C_RuntimeOptionWrapperUsePaddleBackend(IntPtr fd_runtime_option_wrapper);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperUsePaddleInferBackend")]
+  private static extern void FD_C_RuntimeOptionWrapperUsePaddleInferBackend(
+      IntPtr fd_runtime_option_wrapper);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperUseOrtBackend")]
+  private static extern void
+  FD_C_RuntimeOptionWrapperUseOrtBackend(IntPtr fd_runtime_option_wrapper);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperUseSophgoBackend")]
+  private static extern void
+  FD_C_RuntimeOptionWrapperUseSophgoBackend(IntPtr fd_runtime_option_wrapper);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperUseTrtBackend")]
+  private static extern void
+  FD_C_RuntimeOptionWrapperUseTrtBackend(IntPtr fd_runtime_option_wrapper);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperUsePorosBackend")]
+  private static extern void
+  FD_C_RuntimeOptionWrapperUsePorosBackend(IntPtr fd_runtime_option_wrapper);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperUseOpenVINOBackend")]
+  private static extern void
+  FD_C_RuntimeOptionWrapperUseOpenVINOBackend(IntPtr fd_runtime_option_wrapper);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperUseLiteBackend")]
+  private static extern void
+  FD_C_RuntimeOptionWrapperUseLiteBackend(IntPtr fd_runtime_option_wrapper);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperUsePaddleLiteBackend")]
+  private static extern void FD_C_RuntimeOptionWrapperUsePaddleLiteBackend(
+      IntPtr fd_runtime_option_wrapper);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperSetPaddleMKLDNN")]
+  private static extern void
+  FD_C_RuntimeOptionWrapperSetPaddleMKLDNN(IntPtr fd_runtime_option_wrapper,
+                                           bool pd_mkldnn);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperEnablePaddleToTrt")]
+  private static extern void
+  FD_C_RuntimeOptionWrapperEnablePaddleToTrt(IntPtr fd_runtime_option_wrapper);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperDeletePaddleBackendPass")]
+  private static extern void FD_C_RuntimeOptionWrapperDeletePaddleBackendPass(
+      IntPtr fd_runtime_option_wrapper, string delete_pass_name);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperEnablePaddleLogInfo")]
+  private static extern void FD_C_RuntimeOptionWrapperEnablePaddleLogInfo(
+      IntPtr fd_runtime_option_wrapper);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperDisablePaddleLogInfo")]
+  private static extern void FD_C_RuntimeOptionWrapperDisablePaddleLogInfo(
+      IntPtr fd_runtime_option_wrapper);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperSetPaddleMKLDNNCacheSize")]
+  private static extern void FD_C_RuntimeOptionWrapperSetPaddleMKLDNNCacheSize(
+      IntPtr fd_runtime_option_wrapper, int size);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperSetOpenVINODevice")]
+  private static extern void
+  FD_C_RuntimeOptionWrapperSetOpenVINODevice(IntPtr fd_runtime_option_wrapper,
+                                             string name);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperSetLiteOptimizedModelDir")]
+  private static extern void FD_C_RuntimeOptionWrapperSetLiteOptimizedModelDir(
+      IntPtr fd_runtime_option_wrapper, string optimized_model_dir);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint =
+                 "FD_C_RuntimeOptionWrapperSetLiteSubgraphPartitionPath")]
+  private static extern void
+  FD_C_RuntimeOptionWrapperSetLiteSubgraphPartitionPath(
+      IntPtr fd_runtime_option_wrapper,
+      string nnadapter_subgraph_partition_config_path);
+
+  [DllImport(
+      "fastdeploy.dll",
+      EntryPoint =
+          "FD_C_RuntimeOptionWrapperSetLiteSubgraphPartitionConfigBuffer")]
+  private static extern void
+  FD_C_RuntimeOptionWrapperSetLiteSubgraphPartitionConfigBuffer(
+      IntPtr fd_runtime_option_wrapper,
+      string nnadapter_subgraph_partition_config_buffer);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperSetLiteContextProperties")]
+  private static extern void FD_C_RuntimeOptionWrapperSetLiteContextProperties(
+      IntPtr fd_runtime_option_wrapper, string nnadapter_context_properties);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperSetLiteModelCacheDir")]
+  private static extern void FD_C_RuntimeOptionWrapperSetLiteModelCacheDir(
+      IntPtr fd_runtime_option_wrapper, string nnadapter_model_cache_dir);
+
+  [DllImport(
+      "fastdeploy.dll",
+      EntryPoint =
+          "FD_C_RuntimeOptionWrapperSetLiteMixedPrecisionQuantizationConfigPath")]
+  private static extern void
+  FD_C_RuntimeOptionWrapperSetLiteMixedPrecisionQuantizationConfigPath(
+      IntPtr fd_runtime_option_wrapper,
+      string nnadapter_mixed_precision_quantization_config_path);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperEnableLiteFP16")]
+  private static extern void
+  FD_C_RuntimeOptionWrapperEnableLiteFP16(IntPtr fd_runtime_option_wrapper);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperDisableLiteFP16")]
+  private static extern void
+  FD_C_RuntimeOptionWrapperDisableLiteFP16(IntPtr fd_runtime_option_wrapper);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperEnableLiteInt8")]
+  private static extern void
+  FD_C_RuntimeOptionWrapperEnableLiteInt8(IntPtr fd_runtime_option_wrapper);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperDisableLiteInt8")]
+  private static extern void
+  FD_C_RuntimeOptionWrapperDisableLiteInt8(IntPtr fd_runtime_option_wrapper);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperSetLitePowerMode")]
+  private static extern void
+  FD_C_RuntimeOptionWrapperSetLitePowerMode(IntPtr fd_runtime_option_wrapper,
+                                            LitePowerMode mode);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperEnableTrtFP16")]
+  private static extern void
+  FD_C_RuntimeOptionWrapperEnableTrtFP16(IntPtr fd_runtime_option_wrapper);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperDisableTrtFP16")]
+  private static extern void
+  FD_C_RuntimeOptionWrapperDisableTrtFP16(IntPtr fd_runtime_option_wrapper);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperSetTrtCacheFile")]
+  private static extern void
+  FD_C_RuntimeOptionWrapperSetTrtCacheFile(IntPtr fd_runtime_option_wrapper,
+                                           string cache_file_path);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperEnablePinnedMemory")]
+  private static extern void
+  FD_C_RuntimeOptionWrapperEnablePinnedMemory(IntPtr fd_runtime_option_wrapper);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperDisablePinnedMemory")]
+  private static extern void FD_C_RuntimeOptionWrapperDisablePinnedMemory(
+      IntPtr fd_runtime_option_wrapper);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint =
+                 "FD_C_RuntimeOptionWrapperEnablePaddleTrtCollectShape")]
+  private static extern void
+  FD_C_RuntimeOptionWrapperEnablePaddleTrtCollectShape(
+      IntPtr fd_runtime_option_wrapper);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint =
+                 "FD_C_RuntimeOptionWrapperDisablePaddleTrtCollectShape")]
+  private static extern void
+  FD_C_RuntimeOptionWrapperDisablePaddleTrtCollectShape(
+      IntPtr fd_runtime_option_wrapper);
+
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_RuntimeOptionWrapperSetOpenVINOStreams")]
+  private static extern void
+  FD_C_RuntimeOptionWrapperSetOpenVINOStreams(IntPtr fd_runtime_option_wrapper,
+                                              int num_streams);
+
+  [DllImport("fastdeploy.dll", EntryPoint = "FD_C_RuntimeOptionWrapperUseIpu")]
+  private static extern void
+  FD_C_RuntimeOptionWrapperUseIpu(IntPtr fd_runtime_option_wrapper,
+                                  int device_num, int micro_batch_size,
+                                  bool enable_pipelining, int batches_per_step);
+}
+}
diff --git a/csharp/fastdeploy/types_internal_c.cs b/csharp/fastdeploy/types_internal_c.cs
new file mode 100644
index 000000000..d1274e28b
--- /dev/null
+++ b/csharp/fastdeploy/types_internal_c.cs
@@ -0,0 +1,125 @@
+// Copyright (c) 2023 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+using System;
+using System.IO;
+using System.Runtime.InteropServices;
+using fastdeploy.vision;
+
+namespace fastdeploy {
+namespace types_internal_c {
+
+[StructLayout(LayoutKind.Sequential)]
+public struct FD_OneDimArrayUint8 {
+  public nuint size;
+  public IntPtr data;  // byte[]
+}
+
+[StructLayout(LayoutKind.Sequential)]
+public struct FD_OneDimArrayInt32 {
+  public nuint size;
+  public IntPtr data;  // int[]
+}
+
+[StructLayout(LayoutKind.Sequential)]
+public struct FD_OneDimArraySize {
+  public nuint size;
+  public IntPtr data;  // nuint[]
+}
+
+[StructLayout(LayoutKind.Sequential)]
+public struct FD_OneDimArrayInt64 {
+  public nuint size;
+  public IntPtr data;  // long[]
+}
+
+[StructLayout(LayoutKind.Sequential)]
+public struct FD_OneDimArrayFloat {
+  public nuint size;
+  public IntPtr data;  // float[]
+}
+
+[StructLayout(LayoutKind.Sequential)]
+public struct FD_Cstr {
+  public nuint size;
+  public string data;
+}
+
+[StructLayout(LayoutKind.Sequential)]
+public struct FD_OneDimArrayCstr {
+  public nuint size;
+  public IntPtr data;  // FD_Cstr[]
+}
+
+[StructLayout(LayoutKind.Sequential)]
+public struct FD_TwoDimArraySize {
+  public nuint size;
+  public IntPtr data;  // FD_OneDimArraySize[]
+}
+
+[StructLayout(LayoutKind.Sequential)]
+public struct FD_TwoDimArrayFloat {
+  public nuint size;
+  public IntPtr data;  // FD_OneDimArrayFloat[]
+}
+
+public enum FD_ResultType {
+  UNKNOWN_RESULT,
+  CLASSIFY,
+  DETECTION,
+  SEGMENTATION,
+  OCR,
+  MOT,
+  FACE_DETECTION,
+  FACE_ALIGNMENT,
+  FACE_RECOGNITION,
+  MATTING,
+  MASK,
+  KEYPOINT_DETECTION,
+  HEADPOSE
+}
+
+[StructLayout(LayoutKind.Sequential)]
+public struct FD_ClassifyResult {
+  public FD_OneDimArrayInt32 label_ids;
+  public FD_OneDimArrayFloat scores;
+  public FD_ResultType type;
+}
+
+[StructLayout(LayoutKind.Sequential)]
+public struct FD_Mask {
+  public FD_OneDimArrayUint8 data;
+  public FD_OneDimArrayInt64 shape;
+  public FD_ResultType type;
+}
+
+[StructLayout(LayoutKind.Sequential)]
+public struct FD_OneDimMask {
+  public nint size;
+  public IntPtr data;  // FD_Mask*
+}
+
+[StructLayout(LayoutKind.Sequential)]
+public struct FD_DetectionResult {
+  public FD_TwoDimArrayFloat boxes;
+  public FD_OneDimArrayFloat scores;
+  public FD_OneDimArrayInt32 label_ids;
+  public FD_OneDimMask masks;
+  [MarshalAs(UnmanagedType.U1)]
+  public bool contain_masks;
+  public FD_ResultType type;
+}
+
+}
+}
diff --git a/csharp/fastdeploy/vision/classification/ppcls/model.cs b/csharp/fastdeploy/vision/classification/ppcls/model.cs
new file mode 100644
index 000000000..4217c77a6
--- /dev/null
+++ b/csharp/fastdeploy/vision/classification/ppcls/model.cs
@@ -0,0 +1,100 @@
+// Copyright (c) 2023 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+using System;
+using System.IO;
+using System.Runtime.InteropServices;
+using System.Collections.Generic;
+using OpenCvSharp;
+using fastdeploy.types_internal_c;
+
+namespace fastdeploy {
+namespace vision {
+namespace classification {
+
+class PaddleClasModel {
+
+  public PaddleClasModel(string model_file, string params_file,
+                         string config_file, RuntimeOption custom_option = null,
+                         ModelFormat model_format = ModelFormat.PADDLE) {
+    if (custom_option == null) {
+      custom_option = new RuntimeOption();
+    }
+    fd_paddleclas_model_wrapper = FD_C_CreatePaddleClasModelWrapper(
+        model_file, params_file, config_file, custom_option.GetWrapperPtr(),
+        model_format);
+  }
+
+  ~PaddleClasModel() {
+    FD_C_DestroyPaddleClasModelWrapper(fd_paddleclas_model_wrapper);
+  }
+
+  public ClassifyResult Predict(Mat img) {
+    IntPtr fd_classify_result_wrapper_ptr = FD_C_CreateClassifyResultWrapper();
+    FD_C_PaddleClasModelWrapperPredict(
+        fd_paddleclas_model_wrapper, img.CvPtr,
+        fd_classify_result_wrapper_ptr);  // predict
+    IntPtr fd_classify_result_ptr = FD_C_ClassifyResultWrapperGetData(
+        fd_classify_result_wrapper_ptr);  // get result from wrapper
+    FD_ClassifyResult fd_classify_result =
+        (FD_ClassifyResult)Marshal.PtrToStructure(fd_classify_result_ptr,
+                                                  typeof(FD_ClassifyResult));
+    ClassifyResult classify_result =
+        ConvertResult.ConvertCResultToClassifyResult(fd_classify_result);
+    FD_C_DestroyClassifyResultWrapper(
+        fd_classify_result_wrapper_ptr);  // free fd_classify_result_wrapper_ptr
+    FD_C_DestroyClassifyResult(
+        fd_classify_result_ptr);  // free fd_classify_result_ptr
+    return classify_result;
+  }
+
+  // below are underlying C api
+  private IntPtr fd_paddleclas_model_wrapper;
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_CreatePaddleClasModelWrapper")]
+  private static extern IntPtr FD_C_CreatePaddleClasModelWrapper(
+      string model_file, string params_file, string config_file,
+      IntPtr fd_runtime_option_wrapper, ModelFormat model_format);
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_DestroyPaddleClasModelWrapper")]
+  private static extern void
+  FD_C_DestroyPaddleClasModelWrapper(IntPtr fd_paddleclas_model_wrapper);
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_PaddleClasModelWrapperPredict")]
+  private static extern bool
+  FD_C_PaddleClasModelWrapperPredict(IntPtr fd_paddleclas_model_wrapper,
+                                     IntPtr img,
+                                     IntPtr fd_classify_result_wrapper);
+  [DllImport("fastdeploy.dll", EntryPoint = "FD_C_CreateClassifyResultWrapper")]
+  private static extern IntPtr FD_C_CreateClassifyResultWrapper();
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_DestroyClassifyResultWrapper")]
+  private static extern void
+  FD_C_DestroyClassifyResultWrapper(IntPtr fd_classify_result_wrapper);
+  [DllImport("fastdeploy.dll", EntryPoint = "FD_C_DestroyClassifyResult")]
+  private static extern void
+  FD_C_DestroyClassifyResult(IntPtr fd_classify_result);
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_ClassifyResultWrapperGetData")]
+  private static extern IntPtr
+  FD_C_ClassifyResultWrapperGetData(IntPtr fd_classify_result_wrapper);
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_CreateClassifyResultWrapperFromData")]
+  private static extern IntPtr
+  FD_C_CreateClassifyResultWrapperFromData(IntPtr fd_classify_result);
+}
+
+}
+}
+}
\ No newline at end of file
diff --git a/csharp/fastdeploy/vision/detection/ppdet/model.cs b/csharp/fastdeploy/vision/detection/ppdet/model.cs
new file mode 100644
index 000000000..e675746ad
--- /dev/null
+++ b/csharp/fastdeploy/vision/detection/ppdet/model.cs
@@ -0,0 +1,94 @@
+// Copyright (c) 2023 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+using System;
+using System.IO;
+using System.Runtime.InteropServices;
+using System.Collections.Generic;
+using OpenCvSharp;
+using fastdeploy.types_internal_c;
+
+namespace fastdeploy {
+namespace vision {
+namespace detection {
+
+public class PPYOLOE {
+
+  public PPYOLOE(string model_file, string params_file, string config_file,
+                 RuntimeOption custom_option = null,
+                 ModelFormat model_format = ModelFormat.PADDLE) {
+    if (custom_option == null) {
+      custom_option = new RuntimeOption();
+    }
+    fd_ppyoloe_wrapper =
+        FD_C_CreatesPPYOLOEWrapper(model_file, params_file, config_file,
+                                   custom_option.GetWrapperPtr(), model_format);
+  }
+
+  ~PPYOLOE() { FD_C_DestroyPPYOLOEWrapper(fd_ppyoloe_wrapper); }
+
+  public DetectionResult Predict(Mat img) {
+    IntPtr fd_detection_result_wrapper_ptr =
+        FD_C_CreateDetectionResultWrapper();
+    FD_C_PPYOLOEWrapperPredict(fd_ppyoloe_wrapper, img.CvPtr,
+                               fd_detection_result_wrapper_ptr);  // predict
+    IntPtr fd_detection_result_ptr = FD_C_DetectionResultWrapperGetData(
+        fd_detection_result_wrapper_ptr);  // get result from wrapper
+    FD_DetectionResult fd_detection_result =
+        (FD_DetectionResult)Marshal.PtrToStructure(fd_detection_result_ptr,
+                                                   typeof(FD_DetectionResult));
+    DetectionResult detection_result =
+        ConvertResult.ConvertCResultToDetectionResult(fd_detection_result);
+    FD_C_DestroyDetectionResultWrapper(
+        fd_detection_result_wrapper_ptr);  // free fd_detection_result_wrapper_ptr
+    FD_C_DestroyDetectionResult(
+        fd_detection_result_ptr);  // free fd_detection_result_ptr
+    return detection_result;
+  }
+
+  // below are underlying C api
+  private IntPtr fd_ppyoloe_wrapper;
+  [DllImport("fastdeploy.dll", EntryPoint = "FD_C_CreatesPPYOLOEWrapper")]
+  private static extern IntPtr FD_C_CreatesPPYOLOEWrapper(
+      string model_file, string params_file, string config_file,
+      IntPtr fd_runtime_option_wrapper, ModelFormat model_format);
+  [DllImport("fastdeploy.dll", EntryPoint = "FD_C_DestroyPPYOLOEWrapper")]
+  private static extern void
+  FD_C_DestroyPPYOLOEWrapper(IntPtr fd_ppyoloe_wrapper);
+  [DllImport("fastdeploy.dll", EntryPoint = "FD_C_PPYOLOEWrapperPredict")]
+  private static extern bool
+  FD_C_PPYOLOEWrapperPredict(IntPtr fd_ppyoloe_wrapper, IntPtr img,
+                             IntPtr fd_detection_result_wrapper);
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_CreateDetectionResultWrapper")]
+  private static extern IntPtr FD_C_CreateDetectionResultWrapper();
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_DestroyDetectionResultWrapper")]
+  private static extern void
+  FD_C_DestroyDetectionResultWrapper(IntPtr fd_detection_result_wrapper);
+  [DllImport("fastdeploy.dll", EntryPoint = "FD_C_DestroyDetectionResult")]
+  private static extern void
+  FD_C_DestroyDetectionResult(IntPtr fd_detection_result);
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_DetectionResultWrapperGetData")]
+  private static extern IntPtr
+  FD_C_DetectionResultWrapperGetData(IntPtr fd_detection_result_wrapper);
+  [DllImport("fastdeploy.dll",
+             EntryPoint = "FD_C_CreateDetectionResultWrapperFromData")]
+  private static extern IntPtr
+  FD_C_CreateDetectionResultWrapperFromData(IntPtr fd_detection_result);
+}
+}
+}
+}
\ No newline at end of file
diff --git a/csharp/fastdeploy/vision/result.cs b/csharp/fastdeploy/vision/result.cs
new file mode 100644
index 000000000..5b137bc86
--- /dev/null
+++ b/csharp/fastdeploy/vision/result.cs
@@ -0,0 +1,272 @@
+// Copyright (c) 2023 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+using System;
+using System.IO;
+using System.Runtime.InteropServices;
+using System.Collections.Generic;
+using fastdeploy.types_internal_c;
+
+namespace fastdeploy {
+namespace vision {
+
+public enum ResultType {
+  UNKNOWN_RESULT,
+  CLASSIFY,
+  DETECTION,
+  SEGMENTATION,
+  OCR,
+  MOT,
+  FACE_DETECTION,
+  FACE_ALIGNMENT,
+  FACE_RECOGNITION,
+  MATTING,
+  MASK,
+  KEYPOINT_DETECTION,
+  HEADPOSE
+}
+
+public struct Mask {
+  public List<byte> data;
+  public List<long> shape;
+  public ResultType type;
+  public Mask() {
+    this.data = new List<byte>();
+    this.shape = new List<long>();
+    this.type = ResultType.MASK;
+  }
+}
+
+public struct ClassifyResult {
+  public List<int> label_ids;
+  public List<float> scores;
+  public ResultType type;
+  public ClassifyResult() {
+    this.label_ids = new List<int>();
+    this.scores = new List<float>();
+    this.type = ResultType.CLASSIFY;
+  }
+}
+
+public struct DetectionResult {
+  public List<float[]> boxes;
+  public List<float> scores;
+  public List<int> label_ids;
+  public List<Mask> masks;
+  public bool contain_masks;
+  public ResultType type;
+  public DetectionResult() {
+    this.boxes = new List<float[]>();
+    this.scores = new List<float>();
+    this.label_ids = new List<int>();
+    this.masks = new List<Mask>();
+    this.contain_masks = false;
+    this.type = ResultType.DETECTION;
+  }
+}
+
+public class ConvertResult {
+
+  public static FD_ClassifyResult
+  ConvertClassifyResultToCResult(ClassifyResult classify_result) {
+    FD_ClassifyResult fd_classify_result = new FD_ClassifyResult();
+
+    // copy label_ids
+    // Create a managed array
+    fd_classify_result.label_ids.size = (uint)classify_result.label_ids.Count;
+    int[] label_ids = new int[fd_classify_result.label_ids.size];
+    // Copy data from Link to Array
+    classify_result.label_ids.CopyTo(label_ids);
+    // Copy data to unmanaged memory
+    int size = Marshal.SizeOf(label_ids[0]) * label_ids.Length;
+    fd_classify_result.label_ids.data = Marshal.AllocHGlobal(size);
+    Marshal.Copy(label_ids, 0, fd_classify_result.label_ids.data,
+                 label_ids.Length);
+
+    // copy scores
+    // Create a managed array
+    fd_classify_result.scores.size = (uint)classify_result.scores.Count;
+    float[] scores = new float[fd_classify_result.scores.size];
+    // Copy data from Link to Array
+    classify_result.scores.CopyTo(scores);
+    // Copy data to unmanaged memory
+    size = Marshal.SizeOf(scores[0]) * scores.Length;
+    fd_classify_result.scores.data = Marshal.AllocHGlobal(size);
+    Marshal.Copy(scores, 0, fd_classify_result.scores.data, scores.Length);
+
+    fd_classify_result.type = (FD_ResultType)classify_result.type;
+
+    return fd_classify_result;
+  }
+
+  public static ClassifyResult
+  ConvertCResultToClassifyResult(FD_ClassifyResult fd_classify_result) {
+    ClassifyResult classify_result = new ClassifyResult();
+
+    // copy label_ids
+    int[] label_ids = new int[fd_classify_result.label_ids.size];
+    Marshal.Copy(fd_classify_result.label_ids.data, label_ids, 0,
+                 label_ids.Length);
+    classify_result.label_ids = new List<int>(label_ids);
+
+    // copy scores
+    float[] scores = new float[fd_classify_result.scores.size];
+    Marshal.Copy(fd_classify_result.scores.data, scores, 0, scores.Length);
+    classify_result.scores = new List<float>(scores);
+
+    classify_result.type = (ResultType)fd_classify_result.type;
+    return classify_result;
+  }
+
+  public static FD_DetectionResult
+  ConvertDetectionResultToCResult(DetectionResult detection_result) {
+    FD_DetectionResult fd_detection_result = new FD_DetectionResult();
+
+    // copy boxes
+    int boxes_coordinate_dim = 4;
+    int size;
+    fd_detection_result.boxes.size = (uint)detection_result.boxes.Count;
+    FD_OneDimArraySize[] boxes =
+        new FD_OneDimArraySize[fd_detection_result.boxes.size];
+    // Copy each box
+    for (int i = 0; i < (int)fd_detection_result.boxes.size; i++) {
+      boxes[i].size = (uint)detection_result.boxes[i].Length;
+      float[] boxes_i = new float[boxes_coordinate_dim];
+      detection_result.boxes[i].CopyTo(boxes_i, 0);
+      size = Marshal.SizeOf(boxes_i[0]) * boxes_i.Length;
+      boxes[i].data = Marshal.AllocHGlobal(size);
+      Marshal.Copy(boxes_i, 0, boxes[i].data, boxes_i.Length);
+    }
+    // Copy data to unmanaged memory
+    size = Marshal.SizeOf(boxes[0]) * boxes.Length;
+    fd_detection_result.boxes.data = Marshal.AllocHGlobal(size);
+    for (int i = 0; i < boxes.Length; i++) {
+      Marshal.StructureToPtr(
+          boxes[i],
+          fd_detection_result.boxes.data + i * Marshal.SizeOf(boxes[0]), true);
+    }
+
+    // copy scores
+    fd_detection_result.scores.size = (uint)detection_result.scores.Count;
+    float[] scores = new float[fd_detection_result.scores.size];
+    // Copy data from Link to Array
+    detection_result.scores.CopyTo(scores);
+    // Copy data to unmanaged memory
+    size = Marshal.SizeOf(scores[0]) * scores.Length;
+    fd_detection_result.scores.data = Marshal.AllocHGlobal(size);
+    Marshal.Copy(scores, 0, fd_detection_result.scores.data, scores.Length);
+
+    // copy label_ids
+    fd_detection_result.label_ids.size = (uint)detection_result.label_ids.Count;
+    int[] label_ids = new int[fd_detection_result.label_ids.size];
+    // Copy data from Link to Array
+    detection_result.label_ids.CopyTo(label_ids);
+    // Copy data to unmanaged memory
+    size = Marshal.SizeOf(label_ids[0]) * label_ids.Length;
+    fd_detection_result.label_ids.data = Marshal.AllocHGlobal(size);
+    Marshal.Copy(label_ids, 0, fd_detection_result.label_ids.data,
+                 label_ids.Length);
+
+    // copy masks
+    fd_detection_result.masks.size = detection_result.masks.Count;
+    FD_Mask[] masks = new FD_Mask[fd_detection_result.masks.size];
+    // copy each mask
+    for (int i = 0; i < (int)fd_detection_result.masks.size; i++) {
+      // copy data in mask
+      masks[i].data.size = (uint)detection_result.masks[i].data.Count;
+      byte[] masks_data_i = new byte[masks[i].data.size];
+      detection_result.masks[i].data.CopyTo(masks_data_i);
+      size = Marshal.SizeOf(masks_data_i[0]) * masks_data_i.Length;
+      masks[i].data.data = Marshal.AllocHGlobal(size);
+      Marshal.Copy(masks_data_i, 0, masks[i].data.data, masks_data_i.Length);
+      // copy shape in mask
+      masks[i].shape.size = (uint)detection_result.masks[i].shape.Count;
+      long[] masks_shape_i = new long[masks[i].shape.size];
+      detection_result.masks[i].shape.CopyTo(masks_shape_i);
+      size = Marshal.SizeOf(masks_shape_i[0]) * masks_shape_i.Length;
+      masks[i].shape.data = Marshal.AllocHGlobal(size);
+      Marshal.Copy(masks_shape_i, 0, masks[i].shape.data, masks_shape_i.Length);
+      // copy type
+      masks[i].type = (FD_ResultType)detection_result.masks[i].type;
+    }
+    if (fd_detection_result.masks.size != 0) {
+      size = Marshal.SizeOf(masks[0]) * masks.Length;
+      fd_detection_result.masks.data = Marshal.AllocHGlobal(size);
+      for (int i = 0; i < masks.Length; i++) {
+        Marshal.StructureToPtr(masks[i],
+                               fd_detection_result.masks.data +
+                                   i * Marshal.SizeOf(masks[0]),
+                               true);
+      }
+    }
+
+    fd_detection_result.contain_masks = detection_result.contain_masks;
+    fd_detection_result.type = (FD_ResultType)detection_result.type;
+    return fd_detection_result;
+  }
+
+  public static DetectionResult
+  ConvertCResultToDetectionResult(FD_DetectionResult fd_detection_result) {
+    DetectionResult detection_result = new DetectionResult();
+
+    // copy boxes
+    detection_result.boxes = new List<float[]>();
+    FD_OneDimArraySize[] boxes =
+        new FD_OneDimArraySize[fd_detection_result.boxes.size];
+    Console.WriteLine(fd_detection_result.boxes.size);
+    for (int i = 0; i < (int)fd_detection_result.boxes.size; i++) {
+      boxes[i] = (FD_OneDimArraySize)Marshal.PtrToStructure(
+          fd_detection_result.boxes.data + i * Marshal.SizeOf(boxes[0]),
+          typeof(FD_OneDimArraySize));
+      float[] box_i = new float[boxes[i].size];
+      Marshal.Copy(boxes[i].data, box_i, 0, box_i.Length);
+      detection_result.boxes.Add(box_i);
+    }
+
+    // copy scores
+    float[] scores = new float[fd_detection_result.scores.size];
+    Marshal.Copy(fd_detection_result.scores.data, scores, 0, scores.Length);
+    detection_result.scores = new List<float>(scores);
+
+    // copy label_ids
+    int[] label_ids = new int[fd_detection_result.label_ids.size];
+    Marshal.Copy(fd_detection_result.label_ids.data, label_ids, 0,
+                 label_ids.Length);
+    detection_result.label_ids = new List<int>(label_ids);
+
+    // copy masks
+    detection_result.masks = new List<Mask>();
+    FD_Mask[] fd_masks = new FD_Mask[fd_detection_result.masks.size];
+    for (int i = 0; i < (int)fd_detection_result.masks.size; i++) {
+      fd_masks[i] = (FD_Mask)Marshal.PtrToStructure(
+          fd_detection_result.masks.data + i * Marshal.SizeOf(fd_masks[0]),
+          typeof(FD_Mask));
+      Mask mask_i = new Mask();
+      byte[] mask_i_data = new byte[fd_masks[i].data.size];
+      Marshal.Copy(fd_masks[i].data.data, mask_i_data, 0, mask_i_data.Length);
+      long[] mask_i_shape = new long[fd_masks[i].shape.size];
+      Marshal.Copy(fd_masks[i].shape.data, mask_i_shape, 0,
+                   mask_i_shape.Length);
+      mask_i.type = (ResultType)fd_masks[i].type;
+      detection_result.masks.Add(mask_i);
+    }
+    detection_result.contain_masks = fd_detection_result.contain_masks;
+    detection_result.type = (ResultType)fd_detection_result.type;
+    return detection_result;
+  }
+}
+
+}
+
+}
diff --git a/csharp/fastdeploy/vision/visualize.cs b/csharp/fastdeploy/vision/visualize.cs
new file mode 100644
index 000000000..6ed5f168a
--- /dev/null
+++ b/csharp/fastdeploy/vision/visualize.cs
@@ -0,0 +1,45 @@
+// Copyright (c) 2023 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+using System;
+using System.IO;
+using System.Runtime.InteropServices;
+using System.Collections.Generic;
+using OpenCvSharp;
+using fastdeploy.types_internal_c;
+
+namespace fastdeploy {
+namespace vision {
+
+public class Visualize {
+
+  public static Mat VisDetection(Mat im, DetectionResult detection_result,
+                                 float score_threshold = 0.0f,
+                                 int line_size = 1, float font_size = 0.5f) {
+    FD_DetectionResult fd_detection_result =
+        ConvertResult.ConvertDetectionResultToCResult(detection_result);
+    IntPtr result_ptr =
+        FD_C_VisDetection(im.CvPtr, ref fd_detection_result, score_threshold,
+                          line_size, font_size);
+    return new Mat(result_ptr);
+  }
+
+  [DllImport("fastdeploy.dll", EntryPoint = "FD_C_VisDetection")]
+  private static extern IntPtr
+  FD_C_VisDetection(IntPtr im, ref FD_DetectionResult fd_detection_result,
+                    float score_threshold, int line_size, float font_size);
+}
+
+}
+}
\ No newline at end of file
diff --git a/docs/cn/faq/use_sdk_on_windows.md b/docs/cn/faq/use_sdk_on_windows.md
index da3760fac..bb5d5e39d 100644
--- a/docs/cn/faq/use_sdk_on_windows.md
+++ b/docs/cn/faq/use_sdk_on_windows.md
@@ -2,7 +2,7 @@
 
 # 在 Windows 使用 FastDeploy C++ SDK
 
-【**注意**】**编译只支持Release模型，不支持Debug模型**
+【**注意**】**编译只支持Release模式，不支持Debug模式**
 
 ## 1. 准备环境和Windows部署库
 <div id="Environment"></div>  
diff --git a/examples/vision/detection/paddledetection/csharp/CMakeLists.txt b/examples/vision/detection/paddledetection/csharp/CMakeLists.txt
new file mode 100644
index 000000000..e1245d539
--- /dev/null
+++ b/examples/vision/detection/paddledetection/csharp/CMakeLists.txt
@@ -0,0 +1,23 @@
+PROJECT(infer_demo CSharp)
+CMAKE_MINIMUM_REQUIRED (VERSION 3.10)
+
+# Set the C# language version (defaults to 3.0 if not set).
+set(CMAKE_CSharp_FLAGS "/langversion:10")
+set(CMAKE_DOTNET_TARGET_FRAMEWORK "net6.0")
+set(CMAKE_DOTNET_SDK "Microsoft.NET.Sdk")
+
+# 指定下载解压后的fastdeploy库路径
+option(FASTDEPLOY_INSTALL_DIR "Path of downloaded fastdeploy sdk.")
+
+include(${FASTDEPLOY_INSTALL_DIR}/FastDeployCSharp.cmake)
+
+
+add_executable(infer_ppyoloe_demo ${PROJECT_SOURCE_DIR}/infer_ppyoloe.cs)
+
+set_property(TARGET infer_ppyoloe_demo PROPERTY VS_DOTNET_REFERENCES
+    ${FASTDEPLOY_DOTNET_REFERENCES}
+)
+
+set_property(TARGET infer_ppyoloe_demo
+    PROPERTY VS_PACKAGE_REFERENCES  ${FASTDEPLOY_PACKAGE_REFERENCES}
+)
diff --git a/examples/vision/detection/paddledetection/csharp/README.md b/examples/vision/detection/paddledetection/csharp/README.md
new file mode 100644
index 000000000..97bdbe0d3
--- /dev/null
+++ b/examples/vision/detection/paddledetection/csharp/README.md
@@ -0,0 +1,97 @@
+English | [简体中文](README_CN.md)
+# PaddleDetection C# Deployment Example
+
+This directory provides examples that `infer_xxx.cs` to fastly finish the deployment of PaddleDetection models, including PPYOLOE on CPU/GPU.
+
+Before deployment, two steps require confirmation
+
+- 1. Software and hardware should meet the requirements. Please refer to [FastDeploy Environment Requirements](../../../../../docs/en/build_and_install/download_prebuilt_libraries.md)  
+- 2.  Download the precompiled deployment library and samples code according to your development environment. Refer to [FastDeploy Precompiled Library](../../../../../docs/en/build_and_install/download_prebuilt_libraries.md)
+
+Please follow below instructions to compile and test in Windows. FastDeploy version 1.0.4 or above (x.x.x>=1.0.4) is required to support this model.
+
+## 1. Download C# package management tool nuget client
+> https://dist.nuget.org/win-x86-commandline/v6.4.0/nuget.exe
+
+Add nuget program into system variable **PATH**
+
+## 2. Download model and image for test
+> https://bj.bcebos.com/paddlehub/fastdeploy/ppyoloe_crn_l_300e_coco.tgz # (unzip it after download)
+> https://gitee.com/paddlepaddle/PaddleDetection/raw/release/2.4/demo/000000014439.jpg
+
+## 3. Compile example code
+
+Open `x64 Native Tools Command Prompt for VS 2019` command tool on Windows, cd to the demo path of ppyoloe and execute commands
+
+```shell
+cd D:\Download\fastdeploy-win-x64-gpu-x.x.x\examples\vision\detection\paddledetection\csharp
+
+mkdir build && cd build
+cmake .. -G "Visual Studio 16 2019" -A x64 -DFASTDEPLOY_INSTALL_DIR=D:\Download\fastdeploy-win-x64-gpu-x.x.x -DCUDA_DIRECTORY="C:/Program Files/NVIDIA GPU Computing Toolkit/CUDA/v11.2"
+
+nuget restore
+msbuild infer_demo.sln /m:4 /p:Configuration=Release /p:Platform=x64
+```
+
+For more information about how to use FastDeploy SDK to compile a project with Visual Studio 2019. Please refer to
+- [Using the FastDeploy C++ SDK on Windows Platform](../../../../../docs/en/faq/use_sdk_on_windows.md)
+
+## 4. Execute compiled program
+fastdeploy.dll and related dynamic libraries are required by the program. FastDeploy provide a script to copy all required dll to your program path.
+
+```shell
+cd D:\Download\fastdeploy-win-x64-gpu-x.x.x
+
+fastdeploy_init.bat install %cd% D:\Download\fastdeploy-win-x64-gpu-x.x.x\examples\vision\detection\paddledetection\csharp\build\Release
+```
+Then you can run your program and test the model with image
+
+```shell
+cd Release
+infer_ppyoloe_demo.exe ppyoloe_crn_l_300e_coco 000000014439.jpg 0  # CPU
+infer_ppyoloe_demo.exe ppyoloe_crn_l_300e_coco 000000014439.jpg 1  # GPU
+```
+
+## PaddleDetection C# Interface
+
+### Model Class
+
+```c#
+fastdeploy.vision.detection.PPYOLOE(
+        string model_file,
+        string params_file,
+        string config_file
+        fastdeploy.RuntimeOption runtime_option = null,
+        fastdeploy.ModelFormat model_format = ModelFormat.PADDLE)
+```
+
+> PaddleDetection PPYOLOE initialization.
+
+> **Params**
+
+>> * **model_file**(str): Model file path
+>> * **params_file**(str): Parameter file path
+>> * **config_file**(str): Configuration file path, which is the deployment yaml file exported by PaddleDetection
+>> * **runtime_option**(RuntimeOption): Backend inference configuration. null by default, which is the default configuration
+>> * **model_format**(ModelFormat): Model format. Paddle format by default
+
+#### Predict Function
+
+```c#
+fastdeploy.DetectionResult Predict(OpenCvSharp.Mat im)
+```
+
+> Model prediction interface. Input images and output results directly.
+>
+> **Params**
+>
+>> * **im**(Mat): Input images in HWC or BGR format
+>
+> **Return**
+>
+>> * **result**(DetectionResult): Detection result, including detection box and confidence of each box. Refer to [Vision Model Prediction Result](../../../../../docs/api/vision_results/) for DetectionResult
+
+- [Model Description](../../)
+- [Python Deployment](../python)
+- [Vision Model prediction results](../../../../../docs/api/vision_results/)
+- [How to switch the model inference backend engine](../../../../../docs/en/faq/how_to_change_backend.md)
diff --git a/examples/vision/detection/paddledetection/csharp/README_CN.md b/examples/vision/detection/paddledetection/csharp/README_CN.md
new file mode 100644
index 000000000..36b300448
--- /dev/null
+++ b/examples/vision/detection/paddledetection/csharp/README_CN.md
@@ -0,0 +1,99 @@
+[English](README.md) | 简体中文
+# PaddleDetection C#部署示例
+
+本目录下提供`infer_xxx.cs`来调用C# API快速完成PaddleDetection模型PPYOLOE在CPU/GPU上部署的示例。
+
+在部署前，需确认以下两个步骤
+
+- 1. 软硬件环境满足要求，参考[FastDeploy环境要求](../../../../../docs/cn/build_and_install/download_prebuilt_libraries.md)  
+- 2. 根据开发环境，下载预编译部署库和samples代码，参考[FastDeploy预编译库](../../../../../docs/cn/build_and_install/download_prebuilt_libraries.md)
+
+在Windows下执行如下操作完成编译测试，支持此模型需保证FastDeploy版本1.0.4以上(x.x.x>=1.0.4)
+
+## 1. 下载C#包管理程序nuget客户端
+> https://dist.nuget.org/win-x86-commandline/v6.4.0/nuget.exe
+
+下载完成后将该程序添加到环境变量**PATH**中
+
+## 2. 下载模型文件和测试图片
+> https://bj.bcebos.com/paddlehub/fastdeploy/ppyoloe_crn_l_300e_coco.tgz # (下载后解压缩)
+> https://gitee.com/paddlepaddle/PaddleDetection/raw/release/2.4/demo/000000014439.jpg
+
+## 3. 编译示例代码
+
+本文档编译的示例代码可在解压的库中找到，编译工具依赖VS 2019的安装，**Windows打开x64 Native Tools Command Prompt for VS 2019命令工具**，通过如下命令开始编译
+
+```shell
+cd D:\Download\fastdeploy-win-x64-gpu-x.x.x\examples\vision\detection\paddledetection\csharp
+
+mkdir build && cd build
+cmake .. -G "Visual Studio 16 2019" -A x64 -DFASTDEPLOY_INSTALL_DIR=D:\Download\fastdeploy-win-x64-gpu-x.x.x -DCUDA_DIRECTORY="C:/Program Files/NVIDIA GPU Computing Toolkit/CUDA/v11.2"
+
+nuget restore
+msbuild infer_demo.sln /m:4 /p:Configuration=Release /p:Platform=x64
+```
+
+关于使用Visual Studio 2019创建sln工程，或者CMake工程等方式编译的更详细信息，可参考如下文档
+- [在 Windows 使用 FastDeploy C++ SDK](../../../../../docs/cn/faq/use_sdk_on_windows.md)
+- [FastDeploy C++库在Windows上的多种使用方式](../../../../../docs/cn/faq/use_sdk_on_windows_build.md)
+
+## 4. 运行可执行程序
+
+注意Windows上运行时，需要将FastDeploy依赖的库拷贝至可执行程序所在目录, 或者配置环境变量。FastDeploy提供了工具帮助我们快速将所有依赖库拷贝至可执行程序所在目录,通过如下命令将所有依赖的dll文件拷贝至可执行程序所在的目录
+```shell
+cd D:\Download\fastdeploy-win-x64-gpu-x.x.x
+
+fastdeploy_init.bat install %cd% D:\Download\fastdeploy-win-x64-gpu-x.x.x\examples\vision\detection\paddledetection\csharp\build\Release
+```
+
+将dll拷贝到当前路径后，准备好模型和图片，使用如下命令运行可执行程序即可
+```shell
+cd Release
+infer_ppyoloe_demo.exe ppyoloe_crn_l_300e_coco 000000014439.jpg 0  # CPU
+infer_ppyoloe_demo.exe ppyoloe_crn_l_300e_coco 000000014439.jpg 1  # GPU
+```
+
+## PaddleDetection C#接口
+
+### 模型
+
+```c#
+fastdeploy.vision.detection.PPYOLOE(
+        string model_file,
+        string params_file,
+        string config_file
+        fastdeploy.RuntimeOption runtime_option = null,
+        fastdeploy.ModelFormat model_format = ModelFormat.PADDLE)
+```
+
+> PaddleDetection PPYOLOE模型加载和初始化。
+
+> **参数**
+
+>> * **model_file**(str): 模型文件路径
+>> * **params_file**(str): 参数文件路径
+>> * **config_file**(str): 配置文件路径，即PaddleDetection导出的部署yaml文件
+>> * **runtime_option**(RuntimeOption): 后端推理配置，默认为null，即采用默认配置
+>> * **model_format**(ModelFormat): 模型格式，默认为PADDLE格式
+
+#### Predict函数
+
+```c#
+fastdeploy.DetectionResult Predict(OpenCvSharp.Mat im)
+```
+
+> 模型预测接口，输入图像直接输出检测结果。
+>
+> **参数**
+>
+>> * **im**(Mat): 输入图像，注意需为HWC，BGR格式
+>
+> **返回值**
+>
+>> * **result**(DetectionResult): 检测结果，包括检测框，各个框的置信度, DetectionResult说明参考[视觉模型预测结果](../../../../../docs/api/vision_results/)
+
+
+- [模型介绍](../../)
+- [Python部署](../python)
+- [视觉模型预测结果](../../../../../docs/api/vision_results/)
+- [如何切换模型推理后端引擎](../../../../../docs/cn/faq/how_to_change_backend.md)
diff --git a/examples/vision/detection/paddledetection/csharp/infer_ppyoloe.cs b/examples/vision/detection/paddledetection/csharp/infer_ppyoloe.cs
new file mode 100644
index 000000000..c64e4c6af
--- /dev/null
+++ b/examples/vision/detection/paddledetection/csharp/infer_ppyoloe.cs
@@ -0,0 +1,57 @@
+// Copyright (c) 2023 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+using System;
+using System.IO;
+using System.Runtime.InteropServices;
+using OpenCvSharp;
+using fastdeploy;
+
+namespace Test
+{
+    public class TestPPYOLOE
+    {
+        public static void Main(string[] args)
+        {
+            if (args.Length < 3) {
+                Console.WriteLine(
+                    "Usage: infer_demo path/to/model_dir path/to/image run_option, " +
+                    "e.g ./infer_model ./ppyolo_dirname ./test.jpeg 0"
+                );
+                Console.WriteLine( "The data type of run_option is int, 0: run with cpu; 1: run with gpu");
+                return;
+            }
+            string model_dir = args[0];
+            string image_path = args[1];
+            string model_file = model_dir + "\\" + "model.pdmodel";
+            string params_file = model_dir + "\\" + "model.pdiparams";
+            string config_file = model_dir + "\\" + "infer_cfg.yml";
+            RuntimeOption runtimeoption = new RuntimeOption();
+            int device_option = Int32.Parse(args[2]);
+            if(device_option==0){
+                runtimeoption.UseCpu();
+            }else{
+                runtimeoption.UseGpu();
+            }
+            vision.detection.PPYOLOE model = new vision.detection.PPYOLOE(model_file, params_file, config_file, runtimeoption, ModelFormat.PADDLE);
+            Mat image = Cv2.ImRead(image_path);
+            vision.DetectionResult res = model.Predict(image);
+            Mat res_img = vision.Visualize.VisDetection(image, res, 0, 1, 0.5f);
+            Cv2.ImShow("result.png", res_img);
+            Cv2.WaitKey(0);
+
+        }
+
+    }
+}
\ No newline at end of file
diff --git a/examples/vision/segmentation/ppmatting/cpu-gpu/cpp/infer.cc b/examples/vision/segmentation/ppmatting/cpu-gpu/cpp/infer.cc
index 3af778f88..975f0e76b 100644
--- a/examples/vision/segmentation/ppmatting/cpu-gpu/cpp/infer.cc
+++ b/examples/vision/segmentation/ppmatting/cpu-gpu/cpp/infer.cc
@@ -106,9 +106,9 @@ void GpuInfer(const std::string& model_dir, const std::string& image_file,
   auto vis_im = fastdeploy::vision::VisMatting(im, res);
   auto vis_im_with_bg = fastdeploy::vision::SwapBackground(im, bg, res);
   cv::imwrite("visualized_result.jpg", vis_im_with_bg);
-  cv::imwrite("visualized_result_fg.jpg", vis_im);
+  cv::imwrite("visualized_result_fg.png", vis_im);
   std::cout << "Visualized result save in ./visualized_result_replaced_bg.jpg "
-               "and ./visualized_result_fg.jpg"
+               "and ./visualized_result_fg.png"
             << std::endl;
 }
 
diff --git a/examples/vision/segmentation/ppmatting/cpu-gpu/python/infer.py b/examples/vision/segmentation/ppmatting/cpu-gpu/python/infer.py
index 4d7ebb978..a6150ff0e 100755
--- a/examples/vision/segmentation/ppmatting/cpu-gpu/python/infer.py
+++ b/examples/vision/segmentation/ppmatting/cpu-gpu/python/infer.py
@@ -67,8 +67,8 @@ print(result)
 # 可视化结果
 vis_im = fd.vision.vis_matting(im, result)
 vis_im_with_bg = fd.vision.swap_background(im, bg, result)
-cv2.imwrite("visualized_result_fg.jpg", vis_im)
+cv2.imwrite("visualized_result_fg.png", vis_im)
 cv2.imwrite("visualized_result_replaced_bg.jpg", vis_im_with_bg)
 print(
-    "Visualized result save in ./visualized_result_replaced_bg.jpg and ./visualized_result_fg.jpg"
+    "Visualized result save in ./visualized_result_replaced_bg.jpg and ./visualized_result_fg.png"
 )
diff --git a/fastdeploy/runtime/backends/rknpu2/option.h b/fastdeploy/runtime/backends/rknpu2/option.h
index 7205d0bb4..7b641a21f 100644
--- a/fastdeploy/runtime/backends/rknpu2/option.h
+++ b/fastdeploy/runtime/backends/rknpu2/option.h
@@ -34,4 +34,19 @@ typedef enum _rknpu2_core_mask {
   RKNN_NPU_CORE_UNDEFINED,
 } CoreMask;
 }  // namespace rknpu2
+
+struct RKNPU2BackendOption {
+  rknpu2::CpuName cpu_name = rknpu2::CpuName::RK3588;
+
+  // The specification of NPU core setting.It has the following choices :
+  // RKNN_NPU_CORE_AUTO : Referring to automatic mode, meaning that it will
+  // select the idle core inside the NPU.
+  // RKNN_NPU_CORE_0 : Running on the NPU0 core
+  // RKNN_NPU_CORE_1: Runing on the NPU1 core
+  // RKNN_NPU_CORE_2: Runing on the NPU2 core
+  // RKNN_NPU_CORE_0_1: Running on both NPU0 and NPU1 core simultaneously.
+  // RKNN_NPU_CORE_0_1_2: Running on both NPU0, NPU1 and NPU2 simultaneously.
+  rknpu2::CoreMask core_mask = rknpu2::CoreMask::RKNN_NPU_CORE_AUTO;
+};
+
 }  // namespace fastdeploy
diff --git a/fastdeploy/runtime/backends/rknpu2/rknpu2_backend.cc b/fastdeploy/runtime/backends/rknpu2/rknpu2_backend.cc
index a6b9a386f..56291d2d3 100644
--- a/fastdeploy/runtime/backends/rknpu2/rknpu2_backend.cc
+++ b/fastdeploy/runtime/backends/rknpu2/rknpu2_backend.cc
@@ -76,17 +76,24 @@ void RKNPU2Backend::BuildOption(const RKNPU2BackendOption& option) {
 }
 
 /***************************************************************
- *  @name       InitFromRKNN
+ *  @name       Init
  *  @brief      Initialize RKNN model
  *  @param      model_file: Binary data for the RKNN model or the path of RKNN
  *model. params_file: None option: config
  *  @return     bool
  *  @note       None
  ***************************************************************/
-bool RKNPU2Backend::InitFromRKNN(const std::string& model_file,
-                                 const RKNPU2BackendOption& option) {
+bool RKNPU2Backend::Init(const RuntimeOption& runtime_option) {
+  if (!(Supported(runtime_option.model_format, Backend::RKNPU2) && Supported(runtime_option.device, Backend::RKNPU2))) {
+    return false;
+  }
+  if (runtime_option.model_from_memory_) {
+    FDERROR << "RKNPU2 backend doesn't support load model from memory, please load model from disk." << std::endl;
+    return false;
+  }
+
   // LoadModel
-  if (!this->LoadModel((char*)model_file.data())) {
+  if (!this->LoadModel((char*)runtime_option.model_file.data())) {
     FDERROR << "load model failed" << std::endl;
     return false;
   }
@@ -98,7 +105,7 @@ bool RKNPU2Backend::InitFromRKNN(const std::string& model_file,
   }
 
   // BuildOption
-  this->BuildOption(option);
+  this->BuildOption(runtime_option.rknpu2_option);
 
   // SetCoreMask if RK3588
   if (this->option_.cpu_name == rknpu2::CpuName::RK3588) {
@@ -124,7 +131,7 @@ bool RKNPU2Backend::InitFromRKNN(const std::string& model_file,
  *  @return     bool
  *  @note       Only support RK3588
  ***************************************************************/
-bool RKNPU2Backend::SetCoreMask(const rknpu2::CoreMask& core_mask) {
+bool RKNPU2Backend::SetCoreMask(const rknpu2::CoreMask& core_mask) const {
   int ret = rknn_set_core_mask(ctx, static_cast<rknn_core_mask>(core_mask));
   if (ret != RKNN_SUCC) {
     FDERROR << "rknn_set_core_mask fail! ret=" << ret << std::endl;
diff --git a/fastdeploy/runtime/backends/rknpu2/rknpu2_backend.h b/fastdeploy/runtime/backends/rknpu2/rknpu2_backend.h
index 52f174d6d..ccafc9c63 100644
--- a/fastdeploy/runtime/backends/rknpu2/rknpu2_backend.h
+++ b/fastdeploy/runtime/backends/rknpu2/rknpu2_backend.h
@@ -24,40 +24,13 @@
 #include <vector>
 
 namespace fastdeploy {
-struct RKNPU2BackendOption {
-  rknpu2::CpuName cpu_name = rknpu2::CpuName::RK356X;
-
-  // The specification of NPU core setting.It has the following choices :
-  // RKNN_NPU_CORE_AUTO : Referring to automatic mode, meaning that it will
-  // select the idle core inside the NPU.
-  // RKNN_NPU_CORE_0 : Running on the NPU0 core
-  // RKNN_NPU_CORE_1: Runing on the NPU1 core
-  // RKNN_NPU_CORE_2: Runing on the NPU2 core
-  // RKNN_NPU_CORE_0_1: Running on both NPU0 and NPU1 core simultaneously.
-  // RKNN_NPU_CORE_0_1_2: Running on both NPU0, NPU1 and NPU2 simultaneously.
-  rknpu2::CoreMask core_mask = rknpu2::CoreMask::RKNN_NPU_CORE_AUTO;
-};
-
 class RKNPU2Backend : public BaseBackend {
  public:
   RKNPU2Backend() = default;
 
   virtual ~RKNPU2Backend();
 
-  // RKNN API
-  bool LoadModel(void* model);
-
-  bool GetSDKAndDeviceVersion();
-
-  bool SetCoreMask(const rknpu2::CoreMask& core_mask);
-
-  bool GetModelInputOutputInfos();
-
-  // BaseBackend API
-  void BuildOption(const RKNPU2BackendOption& option);
-
-  bool InitFromRKNN(const std::string& model_file,
-                    const RKNPU2BackendOption& option = RKNPU2BackendOption());
+  bool Init(const RuntimeOption& runtime_option);
 
   int NumInputs() const override {
     return static_cast<int>(inputs_desc_.size());
@@ -75,6 +48,18 @@ class RKNPU2Backend : public BaseBackend {
              bool copy_to_fd = true) override;
 
  private:
+  // BaseBackend API
+  void BuildOption(const RKNPU2BackendOption& option);
+  
+  // RKNN API
+  bool LoadModel(void* model);
+
+  bool GetSDKAndDeviceVersion();
+
+  bool SetCoreMask(const rknpu2::CoreMask& core_mask) const;
+
+  bool GetModelInputOutputInfos();
+
   // The object of rknn context.
   rknn_context ctx{};
   // The structure rknn_sdk_version is used to indicate the version
diff --git a/fastdeploy/runtime/enum_variables.h b/fastdeploy/runtime/enum_variables.h
index 582ea7418..7a96e60b4 100644
--- a/fastdeploy/runtime/enum_variables.h
+++ b/fastdeploy/runtime/enum_variables.h
@@ -96,6 +96,37 @@ static std::map<Device, std::vector<Backend>>
   {Device::SOPHGOTPUD, {Backend::SOPHGOTPU}}
 };
 
+inline bool Supported(ModelFormat format, Backend backend) {
+  auto iter = s_default_backends_by_format.find(format);
+  if (iter == s_default_backends_by_format.end()) {
+    FDERROR << "Didn't find format is registered in s_default_backends_by_format." << std::endl;
+    return false;
+  }
+  for (size_t i = 0; i < iter->second.size(); ++i) {
+    if (iter->second[i] == backend) {
+      return true;
+    }
+  }
+  std::string msg = Str(iter->second); 
+  FDERROR << backend << " only supports " << msg << ", but now it's " << format << "." << std::endl;
+  return false;
+}
+
+inline bool Supported(Device device, Backend backend) {
+  auto iter = s_default_backends_by_device.find(device);
+  if (iter == s_default_backends_by_device.end()) {
+    FDERROR << "Didn't find device is registered in s_default_backends_by_device." << std::endl;
+    return false;
+  }
+  for (size_t i = 0; i < iter->second.size(); ++i) {
+    if (iter->second[i] == backend) {
+      return true;
+    }
+  }
+  std::string msg = Str(iter->second); 
+  FDERROR << backend << " only supports " << msg << ", but now it's " << device << "." << std::endl;
+  return false;
+}
 
 FASTDEPLOY_DECL std::ostream& operator<<(std::ostream& o, const Backend& b);
 FASTDEPLOY_DECL std::ostream& operator<<(std::ostream& o, const Device& d);
diff --git a/fastdeploy/runtime/runtime.cc b/fastdeploy/runtime/runtime.cc
index ad84f7261..ceb7c590c 100644
--- a/fastdeploy/runtime/runtime.cc
+++ b/fastdeploy/runtime/runtime.cc
@@ -169,6 +169,7 @@ bool Runtime::Init(const RuntimeOption& _option) {
             << std::endl;
     return false;
   }
+  backend_->benchmark_option_ = option.benchmark_option;
   return true;
 }
 
@@ -282,7 +283,6 @@ void Runtime::CreatePaddleBackend() {
   option.paddle_infer_option.trt_option.gpu_id = option.device_id;
   backend_ = utils::make_unique<PaddleBackend>();
   auto casted_backend = dynamic_cast<PaddleBackend*>(backend_.get());
-  casted_backend->benchmark_option_ = option.benchmark_option;
 
   if (option.model_from_memory_) {
     FDASSERT(
@@ -313,7 +313,6 @@ void Runtime::CreatePaddleBackend() {
 void Runtime::CreateOpenVINOBackend() {
 #ifdef ENABLE_OPENVINO_BACKEND
   backend_ = utils::make_unique<OpenVINOBackend>();
-  backend_->benchmark_option_ = option.benchmark_option;
   FDASSERT(backend_->Init(option), "Failed to initialize OpenVINOBackend.");
 #else
   FDASSERT(false,
@@ -327,7 +326,6 @@ void Runtime::CreateOpenVINOBackend() {
 void Runtime::CreateOrtBackend() {
 #ifdef ENABLE_ORT_BACKEND
   backend_ = utils::make_unique<OrtBackend>();
-  backend_->benchmark_option_ = option.benchmark_option;
 
   FDASSERT(backend_->Init(option), "Failed to initialize Backend::ORT.");
 #else
@@ -348,7 +346,6 @@ void Runtime::CreateTrtBackend() {
   option.trt_option.enable_pinned_memory = option.enable_pinned_memory;
   option.trt_option.external_stream_ = option.external_stream_;
   backend_ = utils::make_unique<TrtBackend>();
-  backend_->benchmark_option_ = option.benchmark_option;
   FDASSERT(backend_->Init(option), "Failed to initialize TensorRT backend.");
 #else
   FDASSERT(false,
@@ -362,7 +359,6 @@ void Runtime::CreateTrtBackend() {
 void Runtime::CreateLiteBackend() {
 #ifdef ENABLE_LITE_BACKEND
   backend_ = utils::make_unique<LiteBackend>();
-  backend_->benchmark_option_ = option.benchmark_option;
 
   FDASSERT(backend_->Init(option),
            "Load model from nb file failed while initializing LiteBackend.");
@@ -376,20 +372,9 @@ void Runtime::CreateLiteBackend() {
 }
 
 void Runtime::CreateRKNPU2Backend() {
-  FDASSERT(option.model_from_memory_ == false,
-           "RKNPU2Backend don't support to load model from memory");
-  FDASSERT(option.device == Device::RKNPU,
-           "Backend::RKNPU2 only supports Device::RKNPU2");
-  FDASSERT(option.model_format == ModelFormat::RKNN,
-           "RKNPU2Backend only support model format of ModelFormat::RKNN");
 #ifdef ENABLE_RKNPU2_BACKEND
-  auto rknpu2_option = RKNPU2BackendOption();
-  rknpu2_option.cpu_name = option.rknpu2_cpu_name_;
-  rknpu2_option.core_mask = option.rknpu2_core_mask_;
   backend_ = utils::make_unique<RKNPU2Backend>();
-  auto casted_backend = dynamic_cast<RKNPU2Backend*>(backend_.get());
-  FDASSERT(casted_backend->InitFromRKNN(option.model_file, rknpu2_option),
-           "Load model from nb file failed while initializing LiteBackend.");
+  FDASSERT(backend_->Init(option), "Failed to initialize RKNPU2 backend.");
 #else
   FDASSERT(false,
            "RKNPU2Backend is not available, please compiled with "
diff --git a/fastdeploy/runtime/runtime_option.cc b/fastdeploy/runtime/runtime_option.cc
index d074a9603..ff687e4f6 100644
--- a/fastdeploy/runtime/runtime_option.cc
+++ b/fastdeploy/runtime/runtime_option.cc
@@ -60,8 +60,8 @@ void RuntimeOption::UseCpu() { device = Device::CPU; }
 
 void RuntimeOption::UseRKNPU2(fastdeploy::rknpu2::CpuName rknpu2_name,
                               fastdeploy::rknpu2::CoreMask rknpu2_core) {
-  rknpu2_cpu_name_ = rknpu2_name;
-  rknpu2_core_mask_ = rknpu2_core;
+  rknpu2_option.cpu_name = rknpu2_name;
+  rknpu2_option.core_mask = rknpu2_core;
   device = Device::RKNPU;
 }
 
diff --git a/fastdeploy/runtime/runtime_option.h b/fastdeploy/runtime/runtime_option.h
index da8e87e25..9bb3b4539 100755
--- a/fastdeploy/runtime/runtime_option.h
+++ b/fastdeploy/runtime/runtime_option.h
@@ -151,6 +151,8 @@ struct FASTDEPLOY_DECL RuntimeOption {
   OpenVINOBackendOption openvino_option;
   /// Option to configure Paddle Lite backend
   LiteBackendOption paddle_lite_option;
+  /// Option to configure RKNPU2 backend
+  RKNPU2BackendOption rknpu2_option;
 
   /** \brief Set the profile mode as 'true'.
    *
@@ -199,12 +201,6 @@ struct FASTDEPLOY_DECL RuntimeOption {
 
   bool enable_pinned_memory = false;
 
-  // ======Only for RKNPU2 Backend=======
-  fastdeploy::rknpu2::CpuName rknpu2_cpu_name_ =
-      fastdeploy::rknpu2::CpuName::RK3588;
-  fastdeploy::rknpu2::CoreMask rknpu2_core_mask_ =
-      fastdeploy::rknpu2::CoreMask::RKNN_NPU_CORE_AUTO;
-
   // *** The belowing api are deprecated, will be removed in v1.2.0
   // *** Do not use it anymore
   void SetPaddleMKLDNN(bool pd_mkldnn = true);
diff --git a/fastdeploy/utils/utils.h b/fastdeploy/utils/utils.h
index 1306d2f60..5b0f03e68 100644
--- a/fastdeploy/utils/utils.h
+++ b/fastdeploy/utils/utils.h
@@ -207,7 +207,7 @@ template <typename T>
 std::string Str(const std::vector<T>& shape) {
   std::ostringstream oss;
   oss << "[ " << shape[0];
-  for (int i = 1; i < shape.size(); ++i) {
+  for (size_t i = 1; i < shape.size(); ++i) {
     oss << " ," << shape[i];
   }
   oss << " ]";
diff --git a/fastdeploy/vision/visualize/matting.cc b/fastdeploy/vision/visualize/matting.cc
index 14514a5a3..c1873a5f6 100644
--- a/fastdeploy/vision/visualize/matting.cc
+++ b/fastdeploy/vision/visualize/matting.cc
@@ -19,11 +19,13 @@ namespace fastdeploy {
 namespace vision {
 
 cv::Mat VisMatting(const cv::Mat& im, const MattingResult& result,
+                   bool transparent_background, float transparent_threshold,
                    bool remove_small_connected_area) {
   FDASSERT((!im.empty()), "im can't be empty!");
   FDASSERT((im.channels() == 3), "Only support 3 channels mat!");
-
   auto vis_img = im.clone();
+  cv::Mat transparent_vis_mat;
+  int channel = im.channels();
   int out_h = static_cast<int>(result.shape[0]);
   int out_w = static_cast<int>(result.shape[1]);
   int height = im.rows;
@@ -43,6 +45,14 @@ cv::Mat VisMatting(const cv::Mat& im, const MattingResult& result,
     (vis_img).convertTo((vis_img), CV_8UC3);
   }
 
+  if (transparent_background) {
+    if (vis_img.channels() != 4) {
+      cv::cvtColor(vis_img, transparent_vis_mat, cv::COLOR_BGR2BGRA);
+      vis_img = transparent_vis_mat;
+      channel = 4;
+    }
+  }
+
   uchar* vis_data = static_cast<uchar*>(vis_img.data);
   uchar* im_data = static_cast<uchar*>(im.data);
   float* alpha_data = reinterpret_cast<float*>(alpha.data);
@@ -50,15 +60,35 @@ cv::Mat VisMatting(const cv::Mat& im, const MattingResult& result,
   for (size_t i = 0; i < height; ++i) {
     for (size_t j = 0; j < width; ++j) {
       float alpha_val = alpha_data[i * width + j];
-      vis_data[i * width * 3 + j * 3 + 0] = cv::saturate_cast<uchar>(
-          static_cast<float>(im_data[i * width * 3 + j * 3 + 0]) * alpha_val +
-          (1.f - alpha_val) * 153.f);
-      vis_data[i * width * 3 + j * 3 + 1] = cv::saturate_cast<uchar>(
-          static_cast<float>(im_data[i * width * 3 + j * 3 + 1]) * alpha_val +
-          (1.f - alpha_val) * 255.f);
-      vis_data[i * width * 3 + j * 3 + 2] = cv::saturate_cast<uchar>(
-          static_cast<float>(im_data[i * width * 3 + j * 3 + 2]) * alpha_val +
-          (1.f - alpha_val) * 120.f);
+      if (transparent_background ) {
+        if (alpha_val < transparent_threshold) {
+          vis_data[i * width * channel + j * channel + 3] =
+              cv::saturate_cast<uchar>(0.f);
+        } else {
+          vis_data[i * width * channel + j * channel + 0] =
+            cv::saturate_cast<uchar>(
+                static_cast<float>(im_data[i * width * 3 + j * 3 + 0]));
+          vis_data[i * width * channel + j * channel + 1] =
+              cv::saturate_cast<uchar>(
+                  static_cast<float>(im_data[i * width * 3 + j * 3 + 1]));
+          vis_data[i * width * channel + j * channel + 2] =
+              cv::saturate_cast<uchar>(
+                  static_cast<float>(im_data[i * width * 3 + j * 3 + 2]));
+        }  
+      } else {
+        vis_data[i * width * channel + j * channel + 0] =
+            cv::saturate_cast<uchar>(
+                static_cast<float>(im_data[i * width * 3 + j * 3 + 0]) *
+                    alpha_val + (1.f - alpha_val) * 153.f);
+        vis_data[i * width * channel + j * channel + 1] =
+            cv::saturate_cast<uchar>(
+                static_cast<float>(im_data[i * width * 3 + j * 3 + 1]) *
+                    alpha_val + (1.f - alpha_val) * 255.f);
+        vis_data[i * width * channel + j * channel + 2] =
+            cv::saturate_cast<uchar>(
+                static_cast<float>(im_data[i * width * 3 + j * 3 + 2]) *
+                    alpha_val + (1.f - alpha_val) * 120.f);
+      }
     }
   }
   return vis_img;
diff --git a/fastdeploy/vision/visualize/visualize.h b/fastdeploy/vision/visualize/visualize.h
index f56a51eec..4614dc4e1 100755
--- a/fastdeploy/vision/visualize/visualize.h
+++ b/fastdeploy/vision/visualize/visualize.h
@@ -143,11 +143,15 @@ FASTDEPLOY_DECL cv::Mat VisSegmentation(const cv::Mat& im,
  *
  * \param[in] im the input image data, comes from cv::imread(), is a 3-D array with layout HWC, BGR format
  * \param[in] result the result produced by model
+ * \param[in] transparent_background if transparent_background==true, the background will with transparent color
+ * \param[in] transparent_threshold since the alpha value in MattringResult is a float between [0, 1], transparent_threshold is used to filter background pixel
  * \param[in] remove_small_connected_area if remove_small_connected_area==true, the visualized result will not include the small connected areas
  * \return cv::Mat type stores the visualized results
  */
 FASTDEPLOY_DECL cv::Mat VisMatting(const cv::Mat& im,
                                    const MattingResult& result,
+                                   bool transparent_background = false,
+                                   float transparent_threshold = 0.999,
                                    bool remove_small_connected_area = false);
 /** \brief Show the visualized results for Ocr models
  *
@@ -184,6 +188,7 @@ FASTDEPLOY_DECL cv::Mat SwapBackground(const cv::Mat& im,
                                        const cv::Mat& background,
                                        const SegmentationResult& result,
                                        int background_label);
+
 /** \brief Show the visualized results for key point detection models
  *
  * \param[in] im the input image data, comes from cv::imread(), is a 3-D array with layout HWC, BGR format
diff --git a/fastdeploy/vision/visualize/visualize_pybind.cc b/fastdeploy/vision/visualize/visualize_pybind.cc
index 802790c30..ca13f4ffa 100644
--- a/fastdeploy/vision/visualize/visualize_pybind.cc
+++ b/fastdeploy/vision/visualize/visualize_pybind.cc
@@ -102,10 +102,12 @@ void BindVisualize(pybind11::module& m) {
            })
       .def("vis_matting",
            [](pybind11::array& im_data, vision::MattingResult& result,
+              bool transparent_background, float transparent_threshold,
               bool remove_small_connected_area) {
              cv::Mat im = PyArrayToCvMat(im_data);
-             auto vis_im =
-                 vision::VisMatting(im, result, remove_small_connected_area);
+             auto vis_im = vision::VisMatting(
+                 im, result, transparent_background, transparent_threshold,
+                 remove_small_connected_area);
              FDTensor out;
              vision::Mat(vis_im).ShareWithTensor(&out);
              return TensorToPyArray(out);
diff --git a/python/fastdeploy/vision/visualize/__init__.py b/python/fastdeploy/vision/visualize/__init__.py
index e528c8804..b87a2dfda 100755
--- a/python/fastdeploy/vision/visualize/__init__.py
+++ b/python/fastdeploy/vision/visualize/__init__.py
@@ -95,15 +95,22 @@ def vis_matting_alpha(im_data,
                                 remove_small_connected_area)
 
 
-def vis_matting(im_data, matting_result, remove_small_connected_area=False):
+def vis_matting(im_data,
+                matting_result,
+                transparent_background=False,
+                transparent_threshold=0.99,
+                remove_small_connected_area=False):
     """Show the visualized results for matting models
 
     :param im_data: (numpy.ndarray)The input image data, 3-D array with layout HWC, BGR format
     :param matting_result: the result produced by model
+    :param transparent_background: whether visulizing matting result with transparent background
+    :param transparent_threshold: since the alpha value in MattringResult is a float between [0, 1], transparent_threshold is used to filter background pixel
     :param remove_small_connected_area: (bool) if remove_small_connected_area==True, the visualized result will not include the small connected areas
     :return: (numpy.ndarray) image with visualized results
     """
     return C.vision.vis_matting(im_data, matting_result,
+                                transparent_background, transparent_threshold,
                                 remove_small_connected_area)