diff --git a/examples/vision/facedet/ultraface/python/README.md b/examples/vision/facedet/ultraface/python/README.md
index 1bac07b93..d747a8383 100644
--- a/examples/vision/facedet/ultraface/python/README.md
+++ b/examples/vision/facedet/ultraface/python/README.md
@@ -72,3 +72,4 @@ UltraFace模型加载和初始化，其中model_file为导出的ONNX模型格式
 - [UltraFace 模型介绍](..)
 - [UltraFace 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](../../../../../docs/runtime/how_to_change_backend.md)