diff --git a/apps/admin/src/pages/IntegrationConfig/index.tsx b/apps/admin/src/pages/IntegrationConfig/index.tsx
index ea8b562..fa09073 100644
--- a/apps/admin/src/pages/IntegrationConfig/index.tsx
+++ b/apps/admin/src/pages/IntegrationConfig/index.tsx
@@ -1,7 +1,7 @@
-import React, { useEffect, useState, useMemo } from 'react';
+import React, { useEffect, useState, useMemo, useCallback } from 'react';
 import {
   Card, Form, Input, Button, Space, message, Spin, Switch, Alert, Descriptions, Tag,
-  Tabs, Drawer, Tree, Checkbox, Select, TreeSelect,
+  Tabs, Drawer, Tree, Checkbox, Select, TreeSelect, Modal, DatePicker, InputNumber,
 } from 'antd';
 import {
   SaveOutlined, ApiOutlined, CheckCircleOutlined, CloseCircleOutlined,
@@ -22,7 +22,7 @@ interface DingOrgTreeNodeExt {
   name: string;
   parentId: number;
   children: DingOrgTreeNodeExt[];
-  users: Array<{ userid: string; name: string; mobile: string }>;
+  users: Array<{ userid: string; name: string; mobile: string; deptIds: number[] }>;
 }
 
 interface RoleItem {
@@ -53,6 +53,17 @@ interface ImportUsersResponse {
   skipped: number;
 }
 
+interface ClassMarkForm {
+  deptId: number;
+  name: string;
+  code: string;
+  classType: string;
+  startDate?: string;
+  endDate?: string;
+  maxStudents?: number;
+  notes?: string;
+}
+
 const UserTreeNode: React.FC<{
   u: { userid: string; name: string; mobile: string };
   isTeacher: boolean;
@@ -99,6 +110,10 @@ const IntegrationConfigPage: React.FC = () => {
   const [roles, setRoles] = useState<Array<{ id: number; name: string }>>([]);
   const [defaultTeacherRoleId, setDefaultTeacherRoleId] = useState<number | null>(null);
   const [deptPickerTree, setDeptPickerTree] = useState<Array<{ title: string; value: number; children?: Array<{ title: string; value: number; children?: unknown[] }> }>>([]);
+  const [classMarks, setClassMarks] = useState<Record<number, ClassMarkForm>>({});
+  const [classModalOpen, setClassModalOpen] = useState(false);
+  const [classModalDept, setClassModalDept] = useState<{ id: number; name: string } | null>(null);
+  const [classForm] = Form.useForm<ClassMarkForm>();
 
   const fetchConfig = async () => {
     setLoading(true);
@@ -206,6 +221,37 @@ const IntegrationConfigPage: React.FC = () => {
     }
   };
 
+  const openClassModal = (deptId: number, deptName: string) => {
+    const existing = classMarks[deptId];
+    if (existing) {
+      classForm.setFieldsValue(existing);
+    } else {
+      classForm.setFieldsValue({
+        deptId,
+        name: deptName,
+        code: '',
+        classType: 'culture',
+      });
+    }
+    setClassModalDept({ id: deptId, name: deptName });
+    setClassModalOpen(true);
+  };
+
+  const handleClassModalOk = async () => {
+    const values = await classForm.validateFields();
+    setClassMarks((prev) => ({
+      ...prev,
+      [values.deptId]: values,
+    }));
+    setClassModalOpen(false);
+    setClassModalDept(null);
+  };
+
+  const handleClassModalCancel = () => {
+    setClassModalOpen(false);
+    setClassModalDept(null);
+  };
+
   const handleImportUsers = async () => {
     setImporting(true);
     try {
@@ -213,24 +259,34 @@ const IntegrationConfigPage: React.FC = () => {
         dingUserId: string;
         name: string;
         mobile: string;
+        deptIds: number[];
       }> = [];
 
       const flatten = (nodes: DingOrgTreeNodeExt[]) => {
         for (const node of nodes) {
-          allUsers.push(...node.users);
+          allUsers.push(
+            ...node.users.map((u) => ({
+              dingUserId: u.userid,
+              name: u.name,
+              mobile: u.mobile,
+              deptIds: u.deptIds || [],
+            })),
+          );
           flatten(node.children);
         }
       };
       flatten(orgTree);
 
       const payload = {
+        classes: Object.values(classMarks),
         users: allUsers.map((u) => ({
-          dingUserId: u.userid,
+          dingUserId: u.dingUserId,
           name: u.name,
           mobile: u.mobile,
-          roleId: teacherChecks[u.userid]
-            ? (teacherRoles[u.userid] || defaultTeacherRoleId)
+          roleId: teacherChecks[u.dingUserId]
+            ? (teacherRoles[u.dingUserId] || defaultTeacherRoleId)
             : null,
+          dingDeptIds: u.deptIds,
         })),
       };
 
@@ -248,9 +304,31 @@ const IntegrationConfigPage: React.FC = () => {
     }
   };
 
-  const buildTreeData = (nodes: DingOrgTreeNodeExt[]): DataNode[] => {
+  const buildTreeData = useCallback((nodes: DingOrgTreeNodeExt[]): DataNode[] => {
     return nodes.map((node) => ({
-      title: node.name,
+      title: (
+        <Space size="small">
+          <span>{node.name}</span>
+          {classMarks[node.id] ? (
+            <Tag
+              color="blue"
+              style={{ cursor: 'pointer' }}
+              onClick={() => openClassModal(node.id, node.name)}
+            >
+              班级: {classMarks[node.id].name} [已标记]
+            </Tag>
+          ) : (
+            <Button
+              size="small"
+              type="link"
+              icon={<span>🏫</span>}
+              onClick={() => openClassModal(node.id, node.name)}
+            >
+              标为班级
+            </Button>
+          )}
+        </Space>
+      ),
       key: `dept-${node.id}`,
       children: [
         ...buildTreeData(node.children),
@@ -258,7 +336,7 @@ const IntegrationConfigPage: React.FC = () => {
           title: (
             <UserTreeNode
               key={u.userid}
-              u={u}
+              u={{ userid: u.userid, name: u.name, mobile: u.mobile }}
               isTeacher={!!teacherChecks[u.userid]}
               onToggle={() => {
                 setTeacherChecks((prev) => ({
@@ -286,9 +364,9 @@ const IntegrationConfigPage: React.FC = () => {
         })),
       ],
     }));
-  };
+  }, [classMarks, teacherChecks, teacherRoles, defaultTeacherRoleId, roles]);
 
-  const treeData = useMemo(() => buildTreeData(orgTree), [orgTree, teacherChecks, teacherRoles, defaultTeacherRoleId, roles]);
+  const treeData = useMemo(() => buildTreeData(orgTree), [orgTree, buildTreeData]);
 
   const syncTabItems = config
     ? [
@@ -323,15 +401,55 @@ const IntegrationConfigPage: React.FC = () => {
                   获取组织架构
                 </Button>
               </Space>
+              <Modal
+                title={classMarks[classModalDept?.id ?? -1] ? '修改班级信息' : '标记为班级'}
+                open={classModalOpen}
+                onOk={handleClassModalOk}
+                onCancel={handleClassModalCancel}
+                destroyOnClose
+              >
+                <Form form={classForm} layout="vertical">
+                  <Form.Item name="deptId" hidden><Input /></Form.Item>
+                  <Form.Item name="name" label="班级名称" rules={[{ required: true, message: '请输入班级名称' }]}>
+                    <Input />
+                  </Form.Item>
+                  <Form.Item name="code" label="班级编码" rules={[{ required: true, message: '请输入班级编码' }]}>
+                    <Input placeholder="如 CS2024-01" />
+                  </Form.Item>
+                  <Form.Item name="classType" label="班型" rules={[{ required: true }]}>
+                    <Select
+                      options={[
+                        { value: 'culture', label: '文化课' },
+                        { value: 'professional', label: '专业课' },
+                        { value: 'bootcamp', label: '集训营' },
+                        { value: 'sprint', label: '冲刺班' },
+                      ]}
+                    />
+                  </Form.Item>
+                  <Form.Item name="startDate" label="开班日期">
+                    <DatePicker style={{ width: '100%' }} />
+                  </Form.Item>
+                  <Form.Item name="endDate" label="结束日期">
+                    <DatePicker style={{ width: '100%' }} />
+                  </Form.Item>
+                  <Form.Item name="maxStudents" label="最大人数">
+                    <InputNumber min={0} style={{ width: '100%' }} placeholder="0 表示不限制" />
+                  </Form.Item>
+                  <Form.Item name="notes" label="备注">
+                    <Input.TextArea rows={2} />
+                  </Form.Item>
+                </Form>
+              </Modal>
+
               {drawerOpen && (
                 <Drawer
                   title="钉钉组织架构 — 勾选老师"
                   open={drawerOpen}
-                  onClose={() => setDrawerOpen(false)}
+                  onClose={() => { setDrawerOpen(false); setClassMarks({}); }}
                   width={520}
                   footer={
                     <Space>
-                      <Button onClick={() => setDrawerOpen(false)}>取消</Button>
+                      <Button onClick={() => { setDrawerOpen(false); setClassMarks({}); }}>取消</Button>
                       <Button
                         type="primary"
                         icon={<ReloadOutlined />}