diff --git a/miniprogram/pages/index/index.wxml b/miniprogram/pages/index/index.wxml
index 1cafb19b411e46c3407fc1cf1aa3d80048ea5e49..afa8f1eaafd133b92a51329a6f11b4244d3e65ab 100644
--- a/miniprogram/pages/index/index.wxml
+++ b/miniprogram/pages/index/index.wxml
@@ -15,7 +15,7 @@
             <view class="">
               <view class="weui-cell weui-cell_select">
                 <view class="weui-cell__hd weui-cell__hd_in-select-after">
-                  <view class="weui-label" style="width:140px;margin-left:15px">交通类型</view>
+                  <view class="weui-label" style="width:120px;margin-left:15px">交通类型</view>
                 </view>
                 <view class="weui-cell__bd">
                   <picker name="typeName" bindchange="bindTypeChange" value="{{radioItems[trafficIndex].value}}" range="{{trafficTypes}}">
@@ -25,7 +25,7 @@
               </view>
               <view class="weui-cell ">
                 <view class="weui-cell__hd">
-                  <view class="weui-label" style="width:140px">{{typeName}}</view>
+                  <view class="weui-label" style="width:120px">{{typeName}}</view>
                 </view>
                 <view class="weui-cell__bd">
                   <input name="typeValue" class="weui-input" placeholder="{{hitValue}}" />
@@ -33,7 +33,7 @@
               </view>
               <view class="weui-cell ">
                 <view class="weui-cell__hd">
-                  <view class="weui-label" style="width:140px">日期</view>
+                  <view class="weui-label" style="width:120px">日期</view>
                 </view>
                 <view class="weui-cell__bd">
                   <picker name="date" mode="date" value="{{date}}" start="2019-01-01" end="2020-12-31" bindchange="bindDateChange">
@@ -54,19 +54,26 @@
     </view>
   </view>
   <view class="yq-body">
+    <!-- wxcode -->
     <view class="wxcode" wx:if="{{wxacodeResult}}" style="width:100%;background-color:white;text-align:center;padding:20px 0px">
       <image src="{{wxacodeSrc}}" show-menu-by-longpress='true' mode="aspectFit" style="margin:0 auto"></image>
       <navigator url="../room/room?roomId={{roomId}}" open-type="navigate" class="uploader-text yq-m-t">
         <button type='primary'>查看同乘信息</button>
       </navigator>
     </view>
-    <view class="yq-footer"></view>
+    <!-- introduction -->
+    <view style="text-align:left;padding:20px">
+      <view>使用说明： </view>
+      <view>1. 乘坐交通工具时生成二维码, 给同乘的旅客扫码订阅 </view>
+      <view>2. 订阅后, 如有疫情请主动上报, 或者平台采集到该班次疫情, 主动微信通知已订阅的旅客</view>
+      <view>3. 同一日期同一趟交通工具多次生成的同一个二维码, 重复生成不影响</view>
+    </view>
   </view>
   <!-- dialogs -->
   <mp-dialog title="使用说明" show="{{introductionVisible}}" bindbuttontap="closeIntroduction" buttons="{{[{text: '确定'}]}}">
     <view style="text-align:left">
-      <view>1. 乘坐交通工具时生成二维码, 给同乘的旅客扫码进群 </view>
-      <view>2. 进群后, 如有疫情请主动上报, 同时平台也会收集信息, 有疫情时主动微信通知进群的旅客</view>
+      <view>1. 乘坐交通工具时生成二维码, 给同乘的旅客扫码订阅 </view>
+      <view>2. 订阅后, 如有疫情请主动上报, 或者平台采集到该班次疫情, 主动微信通知已订阅的旅客</view>
       <view>3. 同一日期同一趟交通工具多次生成的同一个二维码, 重复生成不影响</view>
     </view>
   </mp-dialog>