diff --git a/miniprogram/pages/index/index.wxml b/miniprogram/pages/index/index.wxml
index 6cdacdfe9dfc60617b20c40bbfabbc2c74b30c21..426e319271939301a202a2fdfd3be638c5fddeab 100644
--- a/miniprogram/pages/index/index.wxml
+++ b/miniprogram/pages/index/index.wxml
@@ -34,7 +34,7 @@
             <view class="weui-label" style="margin-left:15px">交通类型</view>
           </view>
           <view class="weui-cell__bd">
-            <picker name="typeName" bindchange="bindTypeChange" value="trafficIndex" range="{{trafficTypes}}">
+            <picker name="typeName" bindchange="bindTypeChange" value="{{radioItems[trafficIndex].value}}" range="{{trafficTypes}}">
               <view class="weui-select" style="margin-left:-15px">{{radioItems[trafficIndex].name}}</view>
             </picker>
           </view>