diff --git a/zh-cn/application-dev/database/data-sync-of-kv-store.md b/zh-cn/application-dev/database/data-sync-of-kv-store.md
index 14a5cdf0ec94f323f49a0d94d7084aa3b1a5289c..4f866f62726e04541d274081390e4f83c31762ee 100644
--- a/zh-cn/application-dev/database/data-sync-of-kv-store.md
+++ b/zh-cn/application-dev/database/data-sync-of-kv-store.md
@@ -160,8 +160,9 @@
        encrypt: false,
        backup: false,
        autoSync: false,
+       // kvStoreType不填时，默认创建多设备协同数据库
        kvStoreType: distributedKVStore.KVStoreType.SINGLE_VERSION,
-       // 设备协同数据库：kvStoreType: distributedKVStore.KVStoreType.DEVICE_COLLABORATION,
+       // 多设备协同数据库：kvStoreType: distributedKVStore.KVStoreType.DEVICE_COLLABORATION,
        securityLevel: distributedKVStore.SecurityLevel.S1
      };
      kvManager.getKVStore('storeId', options, (err, kvStore) => {