diff --git a/docs/uniCloud/unicloud-map.md b/docs/uniCloud/unicloud-map.md
index ce8f470d661234ff6d0ba6c7c302092af5c7087f..03aef41e8d58c8cc86fae5ff3193c4e89e32a85e 100644
--- a/docs/uniCloud/unicloud-map.md
+++ b/docs/uniCloud/unicloud-map.md
@@ -30,6 +30,8 @@ unicloud-map云端一体组件，主要用于显示数据库里的自定义POI
 
 #### 简易示例
 
+注意：由于组件是读取数据库表[opendb-poi](https://gitee.com/dcloud/opendb/blob/master/collection/opendb-poi/collection.json)进行查询，若表不存在或表内没有POI数据，则不会显示POI
+
 ```vue
 <template>
 	<view>