diff --git a/internal/proxy/impl.go b/internal/proxy/impl.go
index e6208a839d02157b0b6293d8a8cb212f0f9d67a3..f70ac406c3dfc926fc6ebbacdade625c54d55674 100644
--- a/internal/proxy/impl.go
+++ b/internal/proxy/impl.go
@@ -1270,6 +1270,7 @@ func (node *Proxy) GetIndexState(ctx context.Context, request *milvuspb.GetIndex
 	return dipt.result, nil
 }
 
+// Insert insert records into collection.
 func (node *Proxy) Insert(ctx context.Context, request *milvuspb.InsertRequest) (*milvuspb.MutationResult, error) {
 	if !node.checkHealthy() {
 		return &milvuspb.MutationResult{