diff --git a/tools/README.md b/tools/README.md
index bdd26d3659246780b3dc9cf52fab1f54fa38a55c..6c3d189d0bac2e05b06c3d97d6c3d149a5d82edd 100644
--- a/tools/README.md
+++ b/tools/README.md
@@ -4,6 +4,7 @@
 ```
 python tools/check_for_lite.py paddle_model/inference_model/__model__
 ```
+附：check_for_lite工具并不能完全判断模型是否被支持，PaddleLite详细支持的算子请参考[PaddleLite支持算子集](https://github.com/PaddlePaddle/Paddle-Lite/blob/develop/docs/introduction/support_operation_list.md)
 
 
 ### 二、模型参数合并