diff --git a/zh-cn/application-dev/database/data-persistence-by-preferences.md b/zh-cn/application-dev/database/data-persistence-by-preferences.md
index 2782c02b6b105c5e40fe78755143e66ed8637dee..6557cbf7eb54e38604c38d308e4ae373e761b609 100644
--- a/zh-cn/application-dev/database/data-persistence-by-preferences.md
+++ b/zh-cn/application-dev/database/data-persistence-by-preferences.md
@@ -234,4 +234,6 @@
 
 - [备忘录（ArkTS）（API9）](https://gitee.com/openharmony/codelabs/tree/master/Data/NotePadOpenHarmony)
 
-- [应用的首次启动（ArkTS）（API9）](https://gitee.com/openharmony/codelabs/tree/master/Data/FirstStartDemo)
\ No newline at end of file
+- [应用的首次启动（ArkTS）（API9）](https://gitee.com/openharmony/codelabs/tree/master/Data/FirstStartDemo)
+
+- [应用内字体大小调节（ArkTS）（API9）](https://gitee.com/openharmony/codelabs/tree/master/Data/SetAppFontSize)
\ No newline at end of file