diff --git a/admin/index.html b/admin/index.html
index 14b03cc..4fdb1a6 100644
--- a/admin/index.html
+++ b/admin/index.html
@@ -137,7 +137,7 @@
 <noscript>
   <strong>您的浏览器禁用了JavaScript脚本，系统无法正常为您提供服务</strong>
 </noscript>
-<div id="app">
+<div id="app" class="scroll">
   <div class="start-loading-center">
     <svg width="100" height="100">
       <circle class="start-loading-mouth" cx="50" cy="50" r="14"></circle>
@@ -145,10 +145,39 @@
     </svg>
   </div>
 </div>
-<script language="JavaScript">
-  document.addEventListener('touchmove', function (e) {
-    e.preventDefault();
-  }, false);
-</script>
 </body>
+<script type="text/javascript">
+  //禁止下拉
+  var overscroll = function (el) {
+    el.addEventListener('touchstart', function () {
+      var top = el.scrollTop
+        , totalScroll = el.scrollHeight
+        , currentScroll = top + el.offsetHeight
+      //If we're at the top or the bottom of the containers
+      //scroll, push up or down one pixel.
+      //
+      //this prevents the scroll from "passing through" to
+      //the body.
+      if (top === 0) {
+        el.scrollTop = 1
+      } else if (currentScroll === totalScroll) {
+        el.scrollTop = top - 1
+      }
+    })
+    el.addEventListener('touchmove', function (evt) {
+      //if the content is actually scrollable, i.e. the content is long enough
+      //that scrolling can occur
+      if (el.offsetHeight < el.scrollHeight)
+        evt._isScroller = true
+    })
+  }
+  overscroll(document.querySelector('.scroll'));
+  document.body.addEventListener('touchmove', function (evt) {
+    //In this case, the default behavior is scrolling the body, which
+    //would result in an overflow.  Since we don't want that, we preventDefault.
+    if (!evt._isScroller) {
+      evt.preventDefault()
+    }
+  })
+</script>
 </html>