diff --git a/zh-cn/application-dev/database/database-storage-guidelines.md b/zh-cn/application-dev/database/database-storage-guidelines.md
index 3ae1c9f824bba694ebe181664c93e3456bc6645d..f7559dc39e96e46a2f2493c601442a22f00eac81 100644
--- a/zh-cn/application-dev/database/database-storage-guidelines.md
+++ b/zh-cn/application-dev/database/database-storage-guidelines.md
@@ -88,9 +88,9 @@
    context.getFilesDir().then((filePath) => {
        path = filePath;
        console.info("======================>getFilesDirPromsie====================>");
+       
+       let promise = dataStorage.getStorage(path + '/mystore');
    });
-
-   let promise = dataStorage.getStorage(path + '/mystore');
    ```
 
 3. 存入数据。