diff --git a/zh-cn/application-dev/reference/apis/js-apis-system-storage.md b/zh-cn/application-dev/reference/apis/js-apis-system-storage.md
index 674be629cbdafa395eca54aff66f1f68c6f96396..924e8336d302b20714fd457d45d6561d3dc57654 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-system-storage.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-system-storage.md
@@ -131,7 +131,7 @@ export default {
 
 delete(Object): void
 
-删除缓存中对应的键值对。
+删除缓存中索引对应的键值对。
 
 **系统能力：** SystemCapability.DistributedDataManager.Preferences.Core