diff --git a/services/distributeddataservice/service/kvdb/kvdb_service_impl.cpp b/services/distributeddataservice/service/kvdb/kvdb_service_impl.cpp
index 7c628c8d4f6f6d3363074ee4b8c47570bf3ef183..4aa437cbcca79c75abd356630f8a1c23ac6a1746 100644
--- a/services/distributeddataservice/service/kvdb/kvdb_service_impl.cpp
+++ b/services/distributeddataservice/service/kvdb/kvdb_service_impl.cpp
@@ -245,6 +245,12 @@ void KVDBServiceImpl::OnAsyncComplete(uint32_t tokenId, uint64_t seqNum, Progres
 
 Status KVDBServiceImpl::Sync(const AppId &appId, const StoreId &storeId, int32_t subUser, SyncInfo &syncInfo)
 {
+    auto instanceId = GetInstIndex(IPCSkeleton::GetCallingTokenID(), appId);
+    if (instanceId != 0) {
+        ZLOGE("twin application not allow sync, instanceId:%{public}d, appId:%{public}s, storeId:%{public}s",
+            instanceId, appId.appId.c_str(), Anonymous::Change(storeId.storeId).c_str());
+        return Status::NOT_SUPPORT;
+    }
     StoreMetaData metaData = GetStoreMetaData(appId, storeId, subUser);
     MetaDataManager::GetInstance().LoadMeta(metaData.GetKeyWithoutPath(), metaData);
     auto delay = GetSyncDelayTime(syncInfo.delay, storeId, metaData.user);
diff --git a/services/distributeddataservice/service/test/kvdb_service_impl_test.cpp b/services/distributeddataservice/service/test/kvdb_service_impl_test.cpp
index bc4c17a967256e8a69e7d1f1202ef438ca003f4e..039577976be7a8734d7a87fad25c39288a4dbbfc 100644
--- a/services/distributeddataservice/service/test/kvdb_service_impl_test.cpp
+++ b/services/distributeddataservice/service/test/kvdb_service_impl_test.cpp
@@ -1507,6 +1507,24 @@ HWTEST_F(KvdbServiceImplTest, syncTest003, TestSize.Level0)
     EXPECT_EQ(localMeta.HasPolicy(DistributedKv::IMMEDIATE_SYNC_ON_ONLINE), true);
 }
 
+/**
+* @tc.name: SyncTest004
+* @tc.desc: twin application sync test
+* @tc.type: FUNC
+*/
+HWTEST_F(KvdbServiceImplTest, SyncTest004, TestSize.Level0)
+{
+    EXPECT_CALL(*accTokenMock, GetTokenTypeFlag(testing::_))
+        .WillOnce(testing::Return(ATokenTypeEnum::TOKEN_HAP))
+        .WillRepeatedly(testing::Return(ATokenTypeEnum::TOKEN_HAP));
+    EXPECT_CALL(*accTokenMock, GetHapTokenInfo(testing::_, testing::_))
+        .WillOnce(testing::Return(0))
+        .WillRepeatedly(testing::Return(0));
+    SyncInfo syncInfo;
+    auto status = kvdbServiceImpl_->Sync(appId, storeId, 0, syncInfo);
+    ASSERT_EQ(status, Status::NOT_SUPPORT);
+}
+
 /**
 * @tc.name: GetSyncParamTest001
 * @tc.desc: GetStoreIds