diff --git a/miniprogram/pages/index/index.wxml b/miniprogram/pages/index/index.wxml
index 1b833ac..d428f7b 100644
--- a/miniprogram/pages/index/index.wxml
+++ b/miniprogram/pages/index/index.wxml
@@ -95,7 +95,7 @@
         bind:click="onShareAppMessage"
         width="240rpx"
         icon="wechat"
-        iconSize="50rpx"
+        iconSize="48rpx"
         icon-class-prefix="toy-icon">
         分享
     </toy-button>
diff --git a/miniprogram/ui/button/button.wxml b/miniprogram/ui/button/button.wxml
index 003afaf..6308e1e 100644
--- a/miniprogram/ui/button/button.wxml
+++ b/miniprogram/ui/button/button.wxml
@@ -38,7 +38,6 @@
     <block wx:else>
         <van-icon
             wx:if="{{ icon }}"
-            size="1.2em"
             name="{{ icon }}"
             size="{{ iconSize }}"
             color="{{ wxs.getIconColor(iconColor, type, plain, disabled) }}"