diff --git a/LICENSE b/LICENSE
index 4947287f7b5ccb5d1e8b7b2d3aa5d89f322c160d..2bb9ad240fa04c8cf706a4901c4807878e90c2dc 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,3 @@
-
                                  Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
diff --git a/frameworks/innerkitsimpl/distributeddatafwk/src/delegate_mgr_callback.h b/frameworks/innerkitsimpl/distributeddatafwk/src/delegate_mgr_callback.h
index 02c28f3e5b70381c421d54c9df9a75bdcd12bb68..a878100d2ca4b4cc009c3ecd12cf164c26e1c86e 100644
--- a/frameworks/innerkitsimpl/distributeddatafwk/src/delegate_mgr_callback.h
+++ b/frameworks/innerkitsimpl/distributeddatafwk/src/delegate_mgr_callback.h
@@ -37,6 +37,7 @@ public:
 
     void GetKvStoreKeys(std::vector<DistributedKv::StoreInfo> &entries) override
     {
+        (void) entries;
     }
 
     bool IsDestruct()
diff --git a/services/distributeddataservice/app/src/backup_handler.cpp b/services/distributeddataservice/app/src/backup_handler.cpp
index 9551a2bdc472b0bf6399abdaf7e08282c9957d7f..f94dd1e5599dd828d4bdc3a940580e68ea7e2454 100644
--- a/services/distributeddataservice/app/src/backup_handler.cpp
+++ b/services/distributeddataservice/app/src/backup_handler.cpp
@@ -89,7 +89,6 @@ void BackupHandler::SingleKvStoreBackup(const MetaData &metaData)
     if (!initPara) {
         return;
     }
-
     DistributedDB::KvStoreNbDelegate::Option dbOption;
     dbOption.createIfNecessary = false;
     dbOption.isEncryptedDb = backupPara.password.GetSize() > 0;
diff --git a/services/distributeddataservice/app/src/query_helper.cpp b/services/distributeddataservice/app/src/query_helper.cpp
index cb56bf8a5349bb24e346dcdc34442482d41760cd..c11c417e93c45b418d7147a2170de8be6f487158 100644
--- a/services/distributeddataservice/app/src/query_helper.cpp
+++ b/services/distributeddataservice/app/src/query_helper.cpp
@@ -36,7 +36,7 @@ DistributedDB::Query QueryHelper::StringToDbQuery(const std::string &query, bool
 {
     ZLOGI("query string length:%{public}zu", query.length());
     DistributedDB::Query dbQuery = DistributedDB::Query::Select();
-    if (query.size() == 0) {
+    if (query.empty()) {
         ZLOGI("Query string is empty.");
         isSuccess = true;
         return dbQuery;