diff --git a/safesite/templates/bindwechat.html b/safesite/templates/bindwechat.html
index bfe7cbb1..3e146c1d 100644
--- a/safesite/templates/bindwechat.html
+++ b/safesite/templates/bindwechat.html
@@ -36,9 +36,11 @@
 
     {% endif %}
     <script>
-        if(window.__wxjs_environment === 'miniprogram'){document.getElementById("mpdiv").innerHTML = "<input onclick='back()' type='button' value='返回小程序'></input>"
-
-        }
+        wx.miniProgram.getEnv(function(res) {
+  if(res.miniprogram){
+    document.getElementById("mpdiv").innerHTML = "<input onclick='back()' type='button' value='返回小程序'></input>"
+  }
+})
     function back(){
         wx.miniProgram.reLaunch({url:'/pages/main/main'})
     }