diff --git a/APP_Framework/Applications/app_test/test_hash/test_hash.h b/APP_Framework/Applications/app_test/test_hash/test_hash.h
index 20ea6ea34..9ecb0db5b 100644
--- a/APP_Framework/Applications/app_test/test_hash/test_hash.h
+++ b/APP_Framework/Applications/app_test/test_hash/test_hash.h
@@ -1,3 +1,23 @@
+/*
+* Copyright (c) 2020 AIIT XUOS Lab
+* XiUOS is licensed under Mulan PSL v2.
+* You can use this software according to the terms and conditions of the Mulan PSL v2.
+* You may obtain a copy of Mulan PSL v2 at:
+*        http://license.coscl.org.cn/MulanPSL2
+* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+* See the Mulan PSL v2 for more details.
+*/
+
+/**
+* @file:    test_hash.h
+* @brief:   a header file to implement hash table
+* @version: 1.1
+* @author:  LeviXubbbb(Bin Xu)
+* @date:    2023/06/22
+*/
+
 #ifndef XIUOS_TEST_HASH_H
 #define XIUOS_TEST_HASH_H