diff --git a/example/app.json b/example/app.json
index 705fe306..1c070cf4 100644
--- a/example/app.json
+++ b/example/app.json
@@ -97,5 +97,6 @@
     "van-collapse": "../../dist/collapse/index",
     "van-collapse-item": "../../dist/collapse-item/index",
     "van-picker": "../../dist/picker/index"
-  }
-}
+  },
+  "sitemapLocation": "sitemap.json"
+}
\ No newline at end of file
diff --git a/example/sitemap.json b/example/sitemap.json
new file mode 100644
index 00000000..ca02add2
--- /dev/null
+++ b/example/sitemap.json
@@ -0,0 +1,7 @@
+{
+  "desc": "关于本文件的更多信息，请参考文档 https://developers.weixin.qq.com/miniprogram/dev/framework/sitemap.html",
+  "rules": [{
+  "action": "allow",
+  "page": "*"
+  }]
+}
\ No newline at end of file
diff --git a/packages/notice-bar/index.less b/packages/notice-bar/index.less
index 4d980fc9..1aac11fd 100644
--- a/packages/notice-bar/index.less
+++ b/packages/notice-bar/index.less
@@ -12,14 +12,9 @@
   }
 
   &__left-icon {
-    height: 18px;
-    min-width: 20px;
-    box-sizing: border-box;
-
-    &-image {
-      width: 16px;
-      height: 16px;
-    }
+    width: 16px;
+    height: 16px;
+    margin-right: 4px;
   }
 
   &__right-icon {
diff --git a/packages/notice-bar/index.wxml b/packages/notice-bar/index.wxml
index d50e0441..85a60b1d 100644
--- a/packages/notice-bar/index.wxml
+++ b/packages/notice-bar/index.wxml
@@ -4,9 +4,11 @@
   style="color: {{ color }}; background-color: {{ backgroundColor }};"
   bind:tap="onClick"
 >
-  <view wx:if="{{ leftIcon }}" class="van-notice-bar__left-icon">
-    <image class="van-notice-bar__left-icon-image" src="{{ leftIcon }}" />
-  </view>
+  <image
+    wx:if="{{ leftIcon }}"
+    src="{{ leftIcon }}"
+    class="van-notice-bar__left-icon"
+  />
   <view class="van-notice-bar__content-wrap">
     <view class="van-notice-bar__content {{ scrollable ? '' : 'van-ellipsis' }}" animation="{{ animationData }}">
       {{ text }}