diff --git a/components/city-change/index.wxml b/components/city-change/index.wxml
index 1e8848f..8794896 100644
--- a/components/city-change/index.wxml
+++ b/components/city-change/index.wxml
@@ -27,6 +27,6 @@
             bindtouchstart='touchStart' bindtouchmove='touchMove' bindtouchend='touchEnd'>{{item}}</text>
     </view>
 </view>
-<view class='cu-dialog show-dialog' wx:if="{{dialogIsShow}}">
+<view class='cu-dialog show-dialog' wx:if="{{dialogIsShow && dialongValue!=null}}">
     <text>{{dialongValue}}</text>
 </view>
\ No newline at end of file