diff --git a/tool/paddle2nb.py b/tool/paddle2nb.py
index 9414cf1..a2201cc 100644
--- a/tool/paddle2nb.py
+++ b/tool/paddle2nb.py
@@ -1,3 +1,4 @@
+# paddle模型转nb格式，推荐使用paddlelite2.10
 from paddlelite.lite import Opt
 
 if __name__ == '__main__':