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 eaf1ff35425f7dd2681bfbdc9547bf3d6158cc63..b91a1221e1aa996199370327b8979b817949e56f 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
@@ -2877,7 +2877,7 @@ 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