diff --git a/core/src/server/web_impl/utils/Util.h b/core/src/server/web_impl/utils/Util.h
deleted file mode 100644
index 9ceaa37ace..0000000000
--- a/core/src/server/web_impl/utils/Util.h
+++ /dev/null
@@ -1,42 +0,0 @@
-// Copyright (C) 2019-2020 Zilliz. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
-// with the License. You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software distributed under the License
-// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
-// or implied. See the License for the specific language governing permissions and limitations under the License.
-
-#pragma once
-
-#include <string>
-#include <vector>
-
-#include "db/Types.h"
-#include "server/web_impl/Types.h"
-#include "utils/Status.h"
-
-namespace milvus {
-namespace server {
-namespace web {
-
-Status
-CopyRowRecords(const OList<OList<OFloat32>::ObjectWrapper>::ObjectWrapper& records, std::vector<float>& vectors);
-
-Status
-CopyBinRowRecords(const OList<OList<OInt64>::ObjectWrapper>::ObjectWrapper& records, std::vector<uint8_t>& vectors);
-
-Status
-ParseQueryInteger(const OQueryParams& query_params, const std::string& key, int64_t& value, bool nullable = true);
-
-Status
-ParseQueryStr(const OQueryParams& query_params, const std::string& key, std::string& value, bool nullable = true);
-
-Status
-ParseQueryBool(const OQueryParams& query_params, const std::string& key, bool& value, bool nullable = true);
-
-}  // namespace web
-}  // namespace server
-}  // namespace milvus