diff --git a/api/src/main/proto/nacos_grpc_service.proto b/api/src/main/proto/nacos_grpc_service.proto
index 797cce1d723..adf2a30a1d3 100644
--- a/api/src/main/proto/nacos_grpc_service.proto
+++ b/api/src/main/proto/nacos_grpc_service.proto
@@ -41,7 +41,7 @@ service Request {
 }
 
 service BiRequestStream {
-  // Sends a commonRequest
+  // Sends a biStreamRequest
   rpc requestBiStream (stream Payload) returns (stream Payload) {
   }
 }