diff --git a/docs/uts/buildin-object-api/number.md b/docs/uts/buildin-object-api/number.md
index 0c3183f3095ed9f535f97ed8d07c2e29439b22ac..6025b66901c75554f3ff47fb400c96dae6241037 100644
--- a/docs/uts/buildin-object-api/number.md
+++ b/docs/uts/buildin-object-api/number.md
@@ -280,3 +280,8 @@ console.log(b);
 ```
 
 <!-- UTSJSON.Number.tutorial -->
+
+## Android 平台方法
+
+Number 类型编译到 `kotlin` 为 `kotlin.Number`
+