diff --git a/python/README.MD b/python/README.MD
index d714730..ae52b5b 100644
--- a/python/README.MD
+++ b/python/README.MD
@@ -110,10 +110,11 @@ pip install grpcio-tools pynng
 
 ### 重新生成 PB 文件
 ```sh
-cd python\wcferry
 # CMD
+cd python\wcferry
 python -m grpc_tools.protoc --python_out=. --proto_path=..\..\rpc\proto\ wcf.proto
 
 # GitBash
+cd python/wcferry
 python -m grpc_tools.protoc --python_out=. --proto_path=../../rpc/proto/ wcf.proto
 ```