diff --git a/internal/proxy/impl.go b/internal/proxy/impl.go
index 224603cda8..32d119adca 100644
--- a/internal/proxy/impl.go
+++ b/internal/proxy/impl.go
@@ -1693,6 +1693,7 @@ func (node *Proxy) Query(ctx context.Context, request *milvuspb.QueryRequest) (*
 	}, nil
 }
 
+// CreateAlias create alias for collection, then you can search the collection with alias.
 func (node *Proxy) CreateAlias(ctx context.Context, request *milvuspb.CreateAliasRequest) (*commonpb.Status, error) {
 	if !node.checkHealthy() {
 		return unhealthyStatus(), nil