diff --git a/uni_modules/uview-ui/components/u-action-sheet/u-action-sheet.vue b/uni_modules/uview-ui/components/u-action-sheet/u-action-sheet.vue
index 26d5d8d9..11a1d1bb 100644
--- a/uni_modules/uview-ui/components/u-action-sheet/u-action-sheet.vue
+++ b/uni_modules/uview-ui/components/u-action-sheet/u-action-sheet.vue
@@ -47,6 +47,7 @@
 						    @error="onError"
 						    @launchapp="onLaunchApp"
 						    @opensetting="onOpenSetting"
+                @chooseavatar="onChooseAvatar"
 						    :lang="lang"
 						    :session-from="sessionFrom"
 						    :send-message-title="sendMessageTitle"
@@ -141,6 +142,7 @@
 	 * @event {Function} error			当使用开放能力时，发生错误的回调，openType="error"时有效
 	 * @event {Function} launchapp		打开 APP 成功的回调，openType="launchApp"时有效
 	 * @event {Function} opensetting	在打开授权设置页后回调，openType="openSetting"时有效
+   * @event {Function} chooseavatar	微信小程序 2.21.2 自定义头像选择事件
 	 * @example <u-action-sheet :actions="list" :title="title" :show="show"></u-action-sheet>
 	 */
 	export default {
diff --git a/uni_modules/uview-ui/components/u-button/u-button.vue b/uni_modules/uview-ui/components/u-button/u-button.vue
index d60f73e2..a718d1ab 100644
--- a/uni_modules/uview-ui/components/u-button/u-button.vue
+++ b/uni_modules/uview-ui/components/u-button/u-button.vue
@@ -20,6 +20,7 @@
         @opensetting="opensetting"
         @launchapp="launchapp"
         @agreeprivacyauthorization="agreeprivacyauthorization"
+        @chooseavatar="chooseavatar"
         :hover-class="!disabled && !loading ? 'u-button--active' : ''"
         class="u-button u-reset-button"
         :style="[baseColor, $u.addStyle(customStyle)]"
@@ -155,6 +156,7 @@ import props from "./props.js";
  * @event {Function}	opensetting		在打开授权设置页并关闭后回调
  * @event {Function}	launchapp		打开 APP 成功的回调
  * @event {Function}	agreeprivacyauthorization	用户同意隐私协议事件回调
+ * @event {Function}	chooseavatar	微信小程序 2.21.2 自定义头像选择事件
  * @example <u-button>月落</u-button>
  */
 export default {
@@ -291,6 +293,9 @@ export default {
         agreeprivacyauthorization(res) {
             this.$emit("agreeprivacyauthorization", res);
         },
+        chooseavatar(res) {
+            this.$emit("chooseavatar", res);
+        }
     },
 };
 </script>
diff --git a/uni_modules/uview-ui/libs/mixin/openType.js b/uni_modules/uview-ui/libs/mixin/openType.js
index 45a3e34b..14feac74 100644
--- a/uni_modules/uview-ui/libs/mixin/openType.js
+++ b/uni_modules/uview-ui/libs/mixin/openType.js
@@ -20,6 +20,9 @@ export default {
         },
         onOpenSetting(event) {
             this.$emit('opensetting', event.detail)
+        },
+        onChooseAvatar(event) {
+            this.$emit('chooseavatar', event.detail)
         }
     }
 }