diff --git a/application/admin/view/layout/default.html b/application/admin/view/layout/default.html
index b07382f..e1a8d70 100644
--- a/application/admin/view/layout/default.html
+++ b/application/admin/view/layout/default.html
@@ -4,8 +4,7 @@
         {include file="common/meta" /}
     </head>
 
-    <body class="inside-header inside-aside {:defined(IS_DIALOG) && IS_DIALOG ? 'is-dialog' : ''}">
-
+    <body class="inside-header inside-aside {:defined('IS_DIALOG') && IS_DIALOG ? 'is-dialog' : ''}">
         <div id="main" role="main">
             <div class="tab-content tab-addtabs">
                 <div id="content">
diff --git a/public/assets/js/backend.js b/public/assets/js/backend.js
index e044f0f..50e33e4 100755
--- a/public/assets/js/backend.js
+++ b/public/assets/js/backend.js
@@ -173,12 +173,16 @@ define(['jquery', 'bootstrap', 'toastr', 'layer', 'lang', 'config'], function ($
                 var btnHeight = layero.find('.layui-layer-btn').outerHeight() || 0;
 
                 var oldheg = heg + titHeight + btnHeight;
+                var maxheg = 600;
+                if (frame.outerWidth() < 768) {
+                    maxheg = $(window).height() - 28;
+                }
                 // 如果有.layer-footer或窗口小于600则重新排
-                if (layerfooter.size() > 0 || oldheg < 600) {
+                if (layerfooter.size() > 0 || oldheg < maxheg) {
                     var footerHeight = layero.find('.layui-layer-footer').outerHeight() || 0;
                     footerHeight = 0;
-                    if (oldheg >= 600) {
-                        heg = Math.min(600, oldheg) - titHeight - btnHeight - footerHeight;
+                    if (oldheg >= maxheg) {
+                        heg = Math.min(maxheg, oldheg) - titHeight - btnHeight - footerHeight;
                     }
                     layero.css({height: heg + titHeight + btnHeight + footerHeight});
                     layero.find("iframe").css({height: heg});