diff --git a/packages/button/index.wxml b/packages/button/index.wxml
index 80348459..beb46cd4 100644
--- a/packages/button/index.wxml
+++ b/packages/button/index.wxml
@@ -25,6 +25,7 @@
   binderror="onError"
   bindlaunchapp="onLaunchApp"
   bindopensetting="onOpenSetting"
+  bindchooseavatar="onChooseAvatar"
 >
   <block wx:if="{{ loading }}">
     <van-loading
diff --git a/packages/mixins/button.ts b/packages/mixins/button.ts
index a0c7dd68..68d7a365 100644
--- a/packages/mixins/button.ts
+++ b/packages/mixins/button.ts
@@ -46,5 +46,13 @@ export const button = Behavior({
     onOpenSetting(event: WechatMiniprogram.ButtonOpenSetting) {
       this.triggerEvent('opensetting', event.detail);
     },
+
+    onChooseAvatar(
+      event: WechatMiniprogram.CustomEvent<
+        WechatMiniprogram.GeneralCallbackResult & { avatarUrl: string }
+        >
+    ) {
+      this.triggerEvent('chooseavatar', event.detail);
+    },
   },
 });