diff --git a/packages/taro-components/types/Picker.d.ts b/packages/taro-components/types/Picker.d.ts
index 3bcecd0a1ad8..6d62dbe56c07 100644
--- a/packages/taro-components/types/Picker.d.ts
+++ b/packages/taro-components/types/Picker.d.ts
@@ -289,6 +289,7 @@ declare namespace PickerRegionProps {
     value: string
     code: string
     postcode?: string
+    children?: RegionData[]
   }
   interface Level {
     /** 省级选择器 */