diff --git a/fastdeploy/runtime/option_pybind.cc b/fastdeploy/runtime/option_pybind.cc
index 1c786459b..7af90d831 100644
--- a/fastdeploy/runtime/option_pybind.cc
+++ b/fastdeploy/runtime/option_pybind.cc
@@ -35,6 +35,7 @@ void BindOption(pybind11::module& m) {
       .def(pybind11::init())
       .def("set_model_path", &RuntimeOption::SetModelPath)
       .def("set_model_buffer", &RuntimeOption::SetModelBuffer)
+      .def("set_encryption_key", &RuntimeOption::SetEncryptionKey)
       .def("use_gpu", &RuntimeOption::UseGpu)
       .def("use_cpu", &RuntimeOption::UseCpu)
       .def("use_rknpu2", &RuntimeOption::UseRKNPU2)
diff --git a/fastdeploy/runtime/runtime.cc b/fastdeploy/runtime/runtime.cc
index 70714e4f0..2a00dfda4 100644
--- a/fastdeploy/runtime/runtime.cc
+++ b/fastdeploy/runtime/runtime.cc
@@ -104,7 +104,31 @@ bool AutoSelectBackend(RuntimeOption& option) {
 
 bool Runtime::Init(const RuntimeOption& _option) {
   option = _option;
-
+  if ("" != option.encryption_key_) {
+     #ifdef ENABLE_ENCRYPTION
+      if (option.model_from_memory_) {
+        option.model_file = Decrypt(option.model_file, option.encryption_key_);
+        if (!(option.params_file.empty())) {
+          option.params_file = Decrypt(option.params_file, option.encryption_key_);
+        }
+      } else {
+        std::string model_buffer = "";
+        FDASSERT(ReadBinaryFromFile(option.model_file, &model_buffer),
+                "Fail to read binary from model file");
+        option.model_file = Decrypt(model_buffer, option.encryption_key_);
+        if (!(option.params_file.empty())) {
+          std::string params_buffer = "";
+          FDASSERT(ReadBinaryFromFile(option.params_file, &params_buffer),
+                  "Fail to read binary from parameter file");
+          option.params_file = Decrypt(params_buffer, option.encryption_key_);
+        }
+        option.model_from_memory_ = true;
+      }
+    #else
+      FDERROR << "The FastDeploy didn't compile with encryption function."
+              << std::endl;
+    #endif
+  }
   // Choose default backend by model format and device if backend is not
   // specified
   if (option.backend == Backend::UNKNOWN) {
diff --git a/fastdeploy/runtime/runtime.h b/fastdeploy/runtime/runtime.h
index 6e7dc9629..772773007 100755
--- a/fastdeploy/runtime/runtime.h
+++ b/fastdeploy/runtime/runtime.h
@@ -23,6 +23,9 @@
 #include "fastdeploy/core/fd_tensor.h"
 #include "fastdeploy/runtime/runtime_option.h"
 #include "fastdeploy/utils/perf.h"
+#ifdef ENABLE_ENCRYPTION
+  #include "fastdeploy/encryption/include/decrypt.h"
+#endif
 
 /** \brief All C++ FastDeploy APIs are defined inside this namespace
 *
diff --git a/fastdeploy/runtime/runtime_option.cc b/fastdeploy/runtime/runtime_option.cc
index c09352d58..8568b3b7f 100644
--- a/fastdeploy/runtime/runtime_option.cc
+++ b/fastdeploy/runtime/runtime_option.cc
@@ -36,6 +36,15 @@ void RuntimeOption::SetModelBuffer(const std::string& model_buffer,
   model_from_memory_ = true;
 }
 
+void RuntimeOption::SetEncryptionKey(const std::string& encryption_key) {
+  #ifdef ENABLE_ENCRYPTION
+    encryption_key_ = encryption_key;
+  #else
+    FDERROR << "The FastDeploy didn't compile with encryption function."
+            << std::endl;
+  #endif
+}
+
 void RuntimeOption::UseGpu(int gpu_id) {
 #ifdef WITH_GPU
   device = Device::GPU;
diff --git a/python/fastdeploy/runtime.py b/python/fastdeploy/runtime.py
index cd7b6641b..1d2fc1c1d 100644
--- a/python/fastdeploy/runtime.py
+++ b/python/fastdeploy/runtime.py
@@ -187,6 +187,13 @@ class RuntimeOption:
         return self._option.set_model_buffer(model_buffer, params_buffer,
                                              model_format)
 
+    def set_encryption_key(self,
+                           encryption_key):
+        """When loading encrypted model, encryption_key is required to decrypte model
+        :param encryption_key: (str)The key for decrypting model
+        """
+        return self._option.set_encryption_key(encryption_key)
+
     def use_gpu(self, device_id=0):
         """Inference with Nvidia GPU