diff --git a/login-base/src/main/resources/templates/default-main.html b/login-base/src/main/resources/templates/default-main.html
index 1dc40a9d..163773f2 100644
--- a/login-base/src/main/resources/templates/default-main.html
+++ b/login-base/src/main/resources/templates/default-main.html
@@ -14,8 +14,8 @@
     <link rel="stylesheet" href="assets/layuiadmin/style/default-main.css" media="all">
     <style>
         .system-nav-box {}
-        .system-nav-box .system-box {display:none;background-color: #fff; max-width: 310px;position: absolute;top: 50px;left: -50px;border: 1px solid #f6f6f6; overflow: hidden;}
-        .system-nav-box .system-box .system-item-list {max-width: 330px; max-height: 310px; overflow: auto; padding-bottom: 10px;}
+        .system-nav-box .system-box {display:none;background-color: #fff; position: absolute;top: 50px;left: -50px;border: 1px solid #f6f6f6; overflow: hidden;}
+        .system-nav-box .system-box .system-item-list {max-height: 310px; overflow: auto; padding-bottom: 10px;}
         .system-nav-box .system-box .system-item-list .system-item {background-color: red; color: #FFF; text-align: left; width: 60px; height: 60px; margin-left: 10px; margin-top: 10px; padding: 15px;border-bottom: 1px solid #f6f6f6; float: left}
         .system-nav-box .system-box .system-item-list .system-item .icon {text-align: center; line-height: 40px;}
         .system-nav-box .system-box .system-item-list .system-item .icon i{font-size: 30px;}
@@ -267,15 +267,30 @@
         });
         /** 左浮动菜单 end **/
 
-        /**
-         * 系统导航
-         */
-        $('.system-nav-box').on('mouseover', function() {
-            $('.system-box').show();
-        });
-        $('.system-nav-box').on('mouseout', function() {
-            $('.system-box').hide();
-        });
+        /** 系统导航 start **/
+        if($('.system-nav-box')) {
+            var systemItems = $('.system-item');
+            if (systemItems.length == 1) {
+                $('.system-nav-box .system-box').css('width', '110px');
+                $('.system-nav-box .system-box .system-item-list').css('width', '130px');
+            } else if(systemItems.length == 2) {
+                $('.system-nav-box .system-box').css('width', '210px');
+                $('.system-nav-box .system-box .system-item-list').css('width', '230px');
+            } else {
+                $('.system-nav-box .system-box').css('width', '310px');
+                $('.system-nav-box .system-box .system-item-list').css('width', '330px');
+            }
+            // 监听事件
+            $('.system-nav-box').on('mouseover', function() {
+                $('.system-box').show();
+            });
+            $('.system-nav-box').on('mouseout', function() {
+                $('.system-box').hide();
+            });
+        }
+
+        /** 系统导航 start **/
+
     });
 </script>
 </body>