diff --git a/zh-cn/application-dev/database/database-mdds-guidelines.md b/zh-cn/application-dev/database/database-mdds-guidelines.md
index 2bd5c818b0088279d3adbc252492b8c2ab48cb68..9a07d9b29fd83a1169d1f2586b740521738aa966 100644
--- a/zh-cn/application-dev/database/database-mdds-guidelines.md
+++ b/zh-cn/application-dev/database/database-mdds-guidelines.md
@@ -169,9 +169,9 @@ OpenHarmony系统中的分布式数据服务模块为开发者提供下面几种
            }
            try{
                kvStore.sync(deviceIds, distributedData.SyncMode.PUSH_ONLY, 1000);
-           }catch(e){
+           }catch (e) {
                 console.log("An unexpected error occurred. Error:" + e);
-            }
+           }
        }
    });
    ```