diff --git a/examples/vision/detection/paddledetection/python/README.md b/examples/vision/detection/paddledetection/python/README.md
index c0da76ab9..9657612ea 100644
--- a/examples/vision/detection/paddledetection/python/README.md
+++ b/examples/vision/detection/paddledetection/python/README.md
@@ -74,4 +74,4 @@ PaddleDetection中各个模型，包括PPYOLOE/PicoDet/PaddleYOLOX/YOLOv3/PPYOLO
 - [PaddleDetection 模型介绍](..)
 - [PaddleDetection C++部署](../cpp)
 - [模型预测结果说明](../../../../../docs/api/vision_results/)
-- [如何切换模型推理后端引擎](../../../../how_to_change_backend.md)
+- [如何切换模型推理后端引擎](../../../../../docs/runtime/how_to_change_backend.md)