diff --git a/zh-cn/application-dev/database/database-preference-guidelines.md b/zh-cn/application-dev/database/database-preference-guidelines.md
index 14e25f9916b5b76deed13334993231ea7f586f20..76f3ff7808a49ab03bc09f5ad26297be6fa67385 100644
--- a/zh-cn/application-dev/database/database-preference-guidelines.md
+++ b/zh-cn/application-dev/database/database-preference-guidelines.md
@@ -167,3 +167,6 @@
         console.info("Deleted failed with err: " + err)
     })
    ```
+## 相关实例
+针对首选项开发，有以下相关实例可供参考：
+- [`Preferences`：首选项（eTS）（API9）](https://gitee.com/openharmony/app_samples/tree/master/data/Preferences)