diff --git a/zh-cn/application-dev/reference/apis/js-apis-data-relationalStore.md b/zh-cn/application-dev/reference/apis/js-apis-data-relationalStore.md
index ef37bc2315e3cbc13758d69fdf8b78578e540c48..6c8344af1ff9d20a1a4156d602dd3c1213e309d6 100644
--- a/zh-cn/application-dev/reference/apis/js-apis-data-relationalStore.md
+++ b/zh-cn/application-dev/reference/apis/js-apis-data-relationalStore.md
@@ -3114,7 +3114,7 @@ try {
 
 off(event:'dataChange', type: SubscribeType, observer: Callback<Array<string>>): void
 
-从数据库中删除指定类型的指定观察者, 使用callback异步回调。
+从数据库中删除指定类型的指定观察者。
 
 **系统能力：** SystemCapability.DistributedDataManager.RelationalStore.Core