diff --git a/examples/vision/detection/paddledetection/rknpu2/cpp/infer_picodet.cc b/examples/vision/detection/paddledetection/rknpu2/cpp/infer_picodet.cc
index 61e6aeb26..f4e14a5d9 100644
--- a/examples/vision/detection/paddledetection/rknpu2/cpp/infer_picodet.cc
+++ b/examples/vision/detection/paddledetection/rknpu2/cpp/infer_picodet.cc
@@ -58,7 +58,7 @@ void RKNPU2Infer(const std::string& model_dir, const std::string& image_file) {
 
   model.GetPreprocessor().DisablePermute();
   model.GetPreprocessor().DisableNormalize();
-  model.GetPostprocessor().ApplyDecodeAndNMS();
+  model.GetPostprocessor().ApplyNMS();
 
   auto im = cv::imread(image_file);
 
diff --git a/examples/vision/detection/paddledetection/rknpu2/cpp/infer_ppyoloe_demo.cc b/examples/vision/detection/paddledetection/rknpu2/cpp/infer_ppyoloe_demo.cc
index 098c6a44e..7d13fda5f 100644
--- a/examples/vision/detection/paddledetection/rknpu2/cpp/infer_ppyoloe_demo.cc
+++ b/examples/vision/detection/paddledetection/rknpu2/cpp/infer_ppyoloe_demo.cc
@@ -43,7 +43,8 @@ void ONNXInfer(const std::string& model_dir, const std::string& image_file) {
 }
 
 void RKNPU2Infer(const std::string& model_dir, const std::string& image_file) {
-  auto model_file = model_dir + "/ppyoloe_plus_crn_s_80e_coco_rk3588_quantized.rknn";
+  auto model_file =
+      model_dir + "/ppyoloe_plus_crn_s_80e_coco_rk3588_quantized.rknn";
   auto params_file = "";
   auto config_file = model_dir + "/infer_cfg.yml";
 
@@ -57,7 +58,7 @@ void RKNPU2Infer(const std::string& model_dir, const std::string& image_file) {
 
   model.GetPreprocessor().DisablePermute();
   model.GetPreprocessor().DisableNormalize();
-  model.GetPostprocessor().ApplyDecodeAndNMS();
+  model.GetPostprocessor().ApplyNMS();
 
   auto im = cv::imread(image_file);
 
diff --git a/examples/vision/detection/paddledetection/rknpu2/cpp/infer_yolov8.cc b/examples/vision/detection/paddledetection/rknpu2/cpp/infer_yolov8.cc
index cf8dcd3b6..87a8dc663 100644
--- a/examples/vision/detection/paddledetection/rknpu2/cpp/infer_yolov8.cc
+++ b/examples/vision/detection/paddledetection/rknpu2/cpp/infer_yolov8.cc
@@ -57,7 +57,7 @@ void RKNPU2Infer(const std::string& model_dir, const std::string& image_file) {
 
   model.GetPreprocessor().DisablePermute();
   model.GetPreprocessor().DisableNormalize();
-  model.GetPostprocessor().ApplyDecodeAndNMS();
+  model.GetPostprocessor().ApplyNMS();
 
   auto im = cv::imread(image_file);
 
diff --git a/examples/vision/detection/paddledetection/rknpu2/python/README.md b/examples/vision/detection/paddledetection/rknpu2/python/README.md
index 6ba45c398..cd7a04ab5 100644
--- a/examples/vision/detection/paddledetection/rknpu2/python/README.md
+++ b/examples/vision/detection/paddledetection/rknpu2/python/README.md
@@ -12,11 +12,10 @@ This directory provides `infer.py` for a quick example of Picodet deployment on
 git clone https://github.com/PaddlePaddle/FastDeploy.git
 cd FastDeploy/examples/vision/detection/paddledetection/rknpu2/python
 
-# Download images.
+# Download images and model
 wget https://gitee.com/paddlepaddle/PaddleDetection/raw/release/2.4/demo/000000014439.jpg
-
-# copy model
-cp -r ./picodet_s_416_coco_lcnet /path/to/FastDeploy/examples/vision/detection/rknpu2detection/paddledetection/python
+wget https://bj.bcebos.com/paddlehub/fastdeploy/rknpu2/picodet_s_416_coco_lcnet.zip
+unzip picodet_s_416_coco_lcnet.zip
 
 # Inference.
 python3 infer.py --model_file ./picodet_s_416_coco_lcnet/picodet_s_416_coco_lcnet_rk3568.rknn  \
diff --git a/examples/vision/detection/paddledetection/rknpu2/python/README_CN.md b/examples/vision/detection/paddledetection/rknpu2/python/README_CN.md
index e80a29fc4..ff60c7a88 100644
--- a/examples/vision/detection/paddledetection/rknpu2/python/README_CN.md
+++ b/examples/vision/detection/paddledetection/rknpu2/python/README_CN.md
@@ -15,8 +15,10 @@ cd FastDeploy/examples/vision/detection/paddledetection/rknpu2/python
 # 下载图片
 wget https://gitee.com/paddlepaddle/PaddleDetection/raw/release/2.4/demo/000000014439.jpg
 
-# copy model
-cp -r ./picodet_s_416_coco_lcnet /path/to/FastDeploy/examples/vision/detection/rknpu2detection/paddledetection/python
+# 下载PPYOLOE模型文件和测试图片
+wget https://bj.bcebos.com/paddlehub/fastdeploy/rknpu2/picodet_s_416_coco_lcnet.zip
+unzip picodet_s_416_coco_lcnet.zip
+wget https://gitee.com/paddlepaddle/PaddleDetection/raw/release/2.4/demo/000000014439.jpg
 
 # 推理
 python3 infer.py --model_file ./picodet_s_416_coco_lcnet/picodet_s_416_coco_lcnet_rk3568.rknn  \
diff --git a/examples/vision/detection/paddledetection/rknpu2/python/infer.py b/examples/vision/detection/paddledetection/rknpu2/python/infer.py
index 2617acd95..1833fd1ef 100644
--- a/examples/vision/detection/paddledetection/rknpu2/python/infer.py
+++ b/examples/vision/detection/paddledetection/rknpu2/python/infer.py
@@ -55,7 +55,7 @@ if __name__ == "__main__":
         model_format=fd.ModelFormat.RKNN)
     model.preprocessor.disable_normalize()
     model.preprocessor.disable_permute()
-    model.postprocessor.apply_decode_and_nms()
+    model.postprocessor.apply_nms()
 
     # 预测图片分割结果
     im = cv2.imread(args.image)
diff --git a/python/fastdeploy/vision/detection/ppdet/__init__.py b/python/fastdeploy/vision/detection/ppdet/__init__.py
index b5a23d1d7..0f15f031a 100644
--- a/python/fastdeploy/vision/detection/ppdet/__init__.py
+++ b/python/fastdeploy/vision/detection/ppdet/__init__.py
@@ -74,14 +74,14 @@ class PaddleDetPostprocessor:
         return self._postprocessor.run(runtime_results)
 
     def apply_nms(self):
-        self.apply_nms()
+        self._postprocessor.apply_nms()
 
     def set_nms_option(self, nms_option=None):
         """This function will enable decode and nms in postprocess step.
         """
         if nms_option is None:
             nms_option = NMSOption()
-        self._postprocessor.ApplyDecodeAndNMS(self, nms_option.nms_option)
+        self._postprocessor.set_nms_option(self, nms_option.nms_option)
 
 
 class PPYOLOE(FastDeployModel):