diff --git a/src/compenents/left-menu/index.tsx b/src/compenents/left-menu/index.tsx
index 94d4f26..7c9cfde 100644
--- a/src/compenents/left-menu/index.tsx
+++ b/src/compenents/left-menu/index.tsx
@@ -32,10 +32,16 @@ const items = [
     ],
     null
   ),
-  getItem("课程中心", "/course", <AppstoreOutlined />, null, null),
+  getItem(
+    "课程中心",
+    "4",
+    <AppstoreOutlined />,
+    [getItem("线上课", "/course", null, null, null)],
+    null
+  ),
   getItem(
     "学员管理",
-    "4",
+    "5",
     <AppstoreOutlined />,
     [
       getItem("学员", "/member", null, null, null),
@@ -45,7 +51,7 @@ const items = [
   ),
   getItem(
     "系统设置",
-    "5",
+    "6",
     <SettingOutlined />,
     [
       getItem("管理人员", "/system/administrator", null, null, null),
@@ -61,9 +67,11 @@ const children2Parent: any = {
 
   "/member": ["4"],
   "/department": ["4"],
+  
+  "/course": ["5"],
 
-  "/system/administrator": ["5"],
-  "/system/adminroles": ["5"],
+  "/system/administrator": ["6"],
+  "/system/adminroles": ["6"],
 };
 
 export const LeftMenu: React.FC = () => {
diff --git a/src/index.less b/src/index.less
index 6f8a499..d165b2f 100644
--- a/src/index.less
+++ b/src/index.less
@@ -123,7 +123,7 @@ code {
   height: 150px;
 }
 
-.playedu-main-body {
+.playedu-main-top{
   width: 100%;
   height: auto;
   float: left;
@@ -133,6 +133,20 @@ code {
   border-radius: 12px;
 }
 
+.playedu-main-body {
+  width: 100%;
+  height: auto;
+  min-height: calc(100vh - 252px);
+  float: left;
+  background-color: white;
+  box-sizing: border-box;
+  padding: 24px;
+  border-radius: 12px;
+  &.only{
+    min-height: calc(100vh - 172px);
+  }
+}
+
 .ant-menu-item {
   width: calc(100% - 32px) !important;
   margin-left: 16px !important;
diff --git a/src/pages/course/index.tsx b/src/pages/course/index.tsx
index 9e52254..f5564da 100644
--- a/src/pages/course/index.tsx
+++ b/src/pages/course/index.tsx
@@ -166,7 +166,7 @@ export const CoursePage = () => {
     <>
       <Row>
         <Col span={4}>
-          <div className="playedu-main-body mb-24" style={{ marginLeft: -24 }}>
+          <div className="playedu-main-body" style={{ marginLeft: -24 }}>
             <div className="float-left mb-24">
               <div className="d-flex mb-24">
                 <Typography.Text>资源分类：</Typography.Text>
@@ -182,7 +182,7 @@ export const CoursePage = () => {
           </div>
         </Col>
         <Col span={20}>
-          <div className="playedu-main-body mb-24">
+          <div className="playedu-main-top mb-24">
             <div className="float-left d-flex">
               <div className="d-flex mr-24">
                 <Typography.Text>课程名称：</Typography.Text>
diff --git a/src/pages/member/index.tsx b/src/pages/member/index.tsx
index 134aa22..0593b39 100644
--- a/src/pages/member/index.tsx
+++ b/src/pages/member/index.tsx
@@ -183,7 +183,7 @@ export const MemberPage: React.FC = () => {
           </div>
         </Col>
         <Col span={20}>
-          <div className="playedu-main-body mb-24">
+          <div className="playedu-main-top mb-24">
             <div className="float-left d-flex">
               <div className="d-flex mr-24">
                 <Typography.Text>昵称：</Typography.Text>
diff --git a/src/pages/system/administrator/index.tsx b/src/pages/system/administrator/index.tsx
index c4de747..f56162c 100644
--- a/src/pages/system/administrator/index.tsx
+++ b/src/pages/system/administrator/index.tsx
@@ -148,7 +148,7 @@ export const SystemAdministratorPage: React.FC = () => {
 
   return (
     <>
-      <div className="playedu-main-body mb-24">
+      <div className="playedu-main-top mb-24">
         <div className="float-left d-flex">
           <div className="d-flex mr-24">
             <Typography.Text>姓名：</Typography.Text>