diff --git a/content/zh/docs/kitex/Tutorials/basic-feature/protocol/serialization-protocol/protobuf.md b/content/zh/docs/kitex/Tutorials/basic-feature/protocol/serialization-protocol/protobuf.md
index b8e7eb7e56..a2c1aa6109 100644
--- a/content/zh/docs/kitex/Tutorials/basic-feature/protocol/serialization-protocol/protobuf.md
+++ b/content/zh/docs/kitex/Tutorials/basic-feature/protocol/serialization-protocol/protobuf.md
@@ -23,13 +23,13 @@ Kitex 为 Protobuf 封装了更高效的传输协议，并提供了一种自定
 #### 客户端
 
 ```sh
-kitex -I idl/ idl/${proto_name}.proto
+kitex -I idl/ idl/${idl_name}.proto
 ```
 
 #### 服务端
 
 ```sh
-kitex -service ${service_name} -I idl/ idl/${proto_name}.proto
+kitex -service ${service_name} -I idl/ idl/${idl_name}.proto
 ```
 
 ### 使用 gRPC 作为传输协议