diff --git a/zh-cn/application-dev/database/database-mdds-guidelines.md b/zh-cn/application-dev/database/database-mdds-guidelines.md
index 8d302d978c53ea6be5a826349a0eb53fa27fb1ae..8863ffc5c02355e792f7ae01b767afe6217fa758 100644
--- a/zh-cn/application-dev/database/database-mdds-guidelines.md
+++ b/zh-cn/application-dev/database/database-mdds-guidelines.md
@@ -13,7 +13,7 @@
 
 | 接口名称                                                     | 描述                                                         |
 | ------------------------------------------------------------ | ------------------------------------------------------------ |
-| createKVManager(config: KVManagerConfig): void<br/>createKVManager(config: KVManagerConfig): Promise&lt;KVManager> | 创建一个`KVManager`对象实例，用于管理数据库对象。            |
+| createKVManager(config: KVManagerConfig): KVManager | 创建一个`KVManager`对象实例，用于管理数据库对象。            |
 | getKVStore&lt;T extends KVStore&gt;(storeId: string, options: Options, callback: AsyncCallback&lt;T&gt;): void<br/>getKVStore&lt;T extends KVStore&gt;(storeId: string, options: Options): Promise&lt;T&gt; | 指定`Options`和`storeId`，创建并获取指定类型`KVStore`数据库。 |
 | put(key: string, value: Uint8Array\|string\|number\|boolean, callback: AsyncCallback&lt;void&gt;): void<br/>put(key: string, value: Uint8Array\|string\|number\|boolean): Promise&lt;void> | 插入和更新数据。                                             |
 | delete(key: string, callback: AsyncCallback&lt;void&gt;): void<br/>delete(key: string): Promise&lt;void> | 删除数据。                                                   |
@@ -117,7 +117,7 @@
        bundleName: 'com.example.datamanagertest',
        context:context,
      }
-     distributedKVStore.createKVManager(kvManagerConfig);
+     kvManager = distributedKVStore.createKVManager(kvManagerConfig);
      console.log("Succeeded in creating KVManager");
    } catch (e) {
      console.error(`Failed to create KVManager.code is ${e.code},message is ${e.message}`);