diff --git a/apps/admin/src/pages/IntegrationConfig/index.tsx b/apps/admin/src/pages/IntegrationConfig/index.tsx
index 36ee791..c8d3533 100644
--- a/apps/admin/src/pages/IntegrationConfig/index.tsx
+++ b/apps/admin/src/pages/IntegrationConfig/index.tsx
@@ -1,11 +1,12 @@
 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, Modal, DatePicker, InputNumber, Table, Popconfirm,
+  Tabs, Drawer, Tree, Select, TreeSelect, Modal, DatePicker, InputNumber, Table, Popconfirm,
+  Row, Col, List,
 } from 'antd';
 import {
   SaveOutlined, ApiOutlined, CheckCircleOutlined, CloseCircleOutlined,
-  SyncOutlined, ReloadOutlined, PlusOutlined,
+  SyncOutlined, PlusOutlined, BankOutlined, UserOutlined,
 } from '@ant-design/icons';
 import type { DataNode } from 'antd/es/tree';
 import api from '../../api';
@@ -25,12 +26,6 @@ interface DingOrgTreeNodeExt {
   users: Array<{ userid: string; name: string; mobile: string; deptIds: number[] }>;
 }
 
-interface RoleItem {
-  id: number;
-  name: string;
-  status: number;
-}
-
 interface OrgTreeNodeRaw {
   id: number;
   name: string;
@@ -47,52 +42,21 @@ interface OrgTreeWithUsersResponse {
   data: DingOrgTreeNodeExt[];
 }
 
-interface ImportUsersResponse {
-  success: boolean;
-  teacherCount: number;
-  studentCount: number;
-  classCount: number;
-  skipped: number;
-  warnings: string[];
-}
-
-interface ClassMarkForm {
-  deptId: number;
+interface ClassItem {
+  id: number;
   name: string;
   code: string;
-  classType: string;
+  classType?: string;
   startDate?: string;
   endDate?: string;
   maxStudents?: number;
   notes?: string;
 }
 
-const UserTreeNode: React.FC<{
-  u: { userid: string; name: string; mobile: string };
-  isTeacher: boolean;
-  onToggle: () => void;
-  roleId: number | undefined;
-  defaultRoleId: number | null;
-  roles: Array<{ id: number; name: string }>;
-  onRoleChange: (roleId: number) => void;
-}> = React.memo(({ u, isTeacher, onToggle, roleId, defaultRoleId, roles, onRoleChange }) => (
-  <Space size="small">
-    <Checkbox checked={isTeacher} onChange={onToggle}>老师</Checkbox>
-    <span style={{ fontWeight: 500 }}>{u.name}</span>
-    {u.mobile && <Tag style={{ marginLeft: 4 }}>{u.mobile}</Tag>}
-    {isTeacher && (
-      <Select
-        size="small"
-        style={{ width: 100, marginLeft: 8 }}
-        value={roleId || defaultRoleId}
-        onChange={onRoleChange}
-        options={roles.map((r) => ({ label: r.name, value: r.id }))}
-        placeholder="选择角色"
-        onClick={(e: React.MouseEvent) => e.stopPropagation()}
-      />
-    )}
-  </Space>
-));
+interface ImportResult {
+  imported: number;
+  skipped: number;
+}
 
 const IntegrationConfigPage: React.FC = () => {
   const [loading, setLoading] = useState(false);
@@ -108,15 +72,12 @@ const IntegrationConfigPage: React.FC = () => {
   const [drawerOpen, setDrawerOpen] = useState(false);
   const [fetchingTree, setFetchingTree] = useState(false);
   const [importing, setImporting] = useState(false);
-  const [teacherChecks, setTeacherChecks] = useState<Record<string, boolean>>({});
-  const [teacherRoles, setTeacherRoles] = useState<Record<string, number>>({});
-  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 [checkedKeys, setCheckedKeys] = useState<React.Key[]>([]);
+  const [selectedClassId, setSelectedClassId] = useState<number | null>(null);
+  const [classes, setClasses] = useState<ClassItem[]>([]);
+  const [classForm] = Form.useForm();
   const [classModalOpen, setClassModalOpen] = useState(false);
-  const [classModalDept, setClassModalDept] = useState<{ id: number; name: string } | null>(null);
-  const [classForm] = Form.useForm<ClassMarkForm>();
 
   // ── DingTalk Bindings Tab ──
   const [bindings, setBindings] = useState<Array<{ id: number; userId: number; dingUserId: string; dingName: string | null; dingMobile: string | null; user: { id: number; username: string; name: string } }>>([]);
@@ -143,7 +104,7 @@ const IntegrationConfigPage: React.FC = () => {
   };
 
   useEffect(() => {
-    void Promise.all([fetchConfig(), fetchRoles()]);
+    void fetchConfig();
   }, []);
 
   const handleSave = async () => {
@@ -180,18 +141,6 @@ const IntegrationConfigPage: React.FC = () => {
     }
   };
 
-  const fetchRoles = async () => {
-    try {
-      const res = await api.get<RoleItem[]>('/rbac/roles');
-      const activeRoles = res.filter((r) => r.status !== 0);
-      setRoles(activeRoles);
-      const teacherRole = activeRoles.find((r) => r.name === '班主任');
-      setDefaultTeacherRoleId(teacherRole?.id || activeRoles[0]?.id || null);
-    } catch {
-      message.error('获取角色列表失败');
-    }
-  };
-
   const fetchBindings = useCallback(async () => {
     try {
       const res = await api.get<typeof bindings>('/rbac/user-ding-mappings');
@@ -258,6 +207,17 @@ const IntegrationConfigPage: React.FC = () => {
     }
   };
 
+  const fetchClasses = async () => {
+    try {
+      const res = await api.get<ClassItem[] | { data: ClassItem[] }>('/classes');
+      if (Array.isArray(res)) {
+        setClasses(res);
+      } else {
+        setClasses(res.data ?? []);
+      }
+    } catch { /* ignore */ }
+  };
+
   const handleFetchOrgTree = async () => {
     setFetchingTree(true);
     try {
@@ -266,9 +226,10 @@ const IntegrationConfigPage: React.FC = () => {
       const res = await api.get<OrgTreeWithUsersResponse>('/sync/dingtalk/org-tree-with-users', { params });
       if (res.success && res.data) {
         setOrgTree(res.data);
-        setTeacherChecks({});
-        setTeacherRoles({});
+        setCheckedKeys([]);
+        setSelectedClassId(null);
         setDrawerOpen(true);
+        fetchClasses();
       } else {
         message.error('获取组织架构失败');
       }
@@ -280,89 +241,41 @@ 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,
+  const buildTreeData = useCallback((nodes: DingOrgTreeNodeExt[]): DataNode[] => {
+    return nodes.map((node) => ({
+      title: (
+        <Space size="small">
+          <BankOutlined />
+          <span>{node.name}</span>
+          <Tag>{node.users.length}人</Tag>
+        </Space>
+      ),
+      key: `dept-${node.id}`,
+      children: [
+        ...buildTreeData(node.children),
+        ...node.users.map((u) => ({
+          title: <Space><UserOutlined /><span>{u.name}</span><Tag>{u.mobile}</Tag></Space>,
+          key: `user-${u.userid}`,
+        })),
+      ],
     }));
-    setClassModalOpen(false);
-    setClassModalDept(null);
-  };
+  }, []);
 
-  const handleClassModalCancel = () => {
-    setClassModalOpen(false);
-    setClassModalDept(null);
-  };
+  const treeData = useMemo(() => buildTreeData(orgTree), [orgTree, buildTreeData]);
+
+  const handleJoinClass = async () => {
+    if (selectedClassId === null) return message.warning('请先选择一个班级');
+    const userIds = checkedKeys
+      .filter((k) => String(k).startsWith('user-'))
+      .map((k) => String(k).replace('user-', ''));
+    if (userIds.length === 0) return message.warning('请勾选要导入的用户');
 
-  const handleImportUsers = async () => {
     setImporting(true);
     try {
-      const allUsers: Array<{
-        dingUserId: string;
-        name: string;
-        mobile: string;
-        deptIds: number[];
-      }> = [];
-
-      const flatten = (nodes: DingOrgTreeNodeExt[]) => {
-        for (const node of nodes) {
-          allUsers.push(
-            ...node.users.map((u) => ({
-              dingUserId: u.userid,
-              name: u.name,
-              mobile: u.mobile,
-              deptIds: u.deptIds || [],
-            })),
-          );
-          flatten(node.children);
-        }
-      };
-      flatten(orgTree);
-
-      const usersPayload = allUsers.map((u) => {
-        const item: Record<string, unknown> = {
-          dingUserId: u.dingUserId,
-          name: u.name,
-          mobile: u.mobile,
-          roleId: teacherChecks[u.dingUserId]
-            ? (teacherRoles[u.dingUserId] || defaultTeacherRoleId)
-            : null,
-          dingDeptIds: u.deptIds,
-        };
-        return item;
-      });
-      const payload = {
-        classes: Object.values(classMarks),
-        users: usersPayload,
-      };
-
-      const data: any = await api.post('/sync/dingtalk/import-users', payload);
-      message.success(
-        `导入完成：${data.teacherCount} 位老师，${data.studentCount} 位学生` +
-        (data.classCount ? `，${data.classCount} 个班级` : '') +
-        (data.skipped > 0 ? `，${data.skipped} 已跳过` : ''),
-      );
-      if (data.warnings?.length > 0) {
-        message.warning(data.warnings.join('；'), 8);
-      }
-      setDrawerOpen(false);
+      const res = await api.post<ImportResult>(`/classes/${selectedClassId}/students/import`, { dingUserIds: userIds });
+      message.success(`导入 ${res.imported} 人，跳过 ${res.skipped} 人`);
+      setCheckedKeys([]);
+      setSelectedClassId(null);
     } catch (e: unknown) {
       const err = e as { message?: string };
       message.error(err?.message || '导入失败');
@@ -371,73 +284,31 @@ const IntegrationConfigPage: React.FC = () => {
     }
   };
 
-  const buildTreeData = useCallback((nodes: DingOrgTreeNodeExt[]): DataNode[] => {
-    return nodes.map((node) => ({
-      title: (
-        <Space size="small">
-          <span>{node.name}</span>
-          {node.children.length === 0 && node.users.length > 0 && (
-            <>
-              {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-${node.id}`,
-      children: [
-        ...buildTreeData(node.children),
-        ...node.users.map((u) => ({
-          title: (
-            <UserTreeNode
-              key={u.userid}
-              u={{ userid: u.userid, name: u.name, mobile: u.mobile }}
-              isTeacher={!!teacherChecks[u.userid]}
-              onToggle={() => {
-                setTeacherChecks((prev) => ({
-                  ...prev,
-                  [u.userid]: !prev[u.userid],
-                }));
-                if (teacherChecks[u.userid]) {
-                  setTeacherRoles((prev) => {
-                    const next = { ...prev };
-                    delete next[u.userid];
-                    return next;
-                  });
-                }
-              }}
-              roleId={teacherRoles[u.userid]}
-              defaultRoleId={defaultTeacherRoleId}
-              roles={roles}
-              onRoleChange={(roleId) =>
-                setTeacherRoles((prev) => ({ ...prev, [u.userid]: roleId }))
-              }
-            />
-          ),
-          key: `user-${u.userid}`,
-          selectable: false,
-        })),
-      ],
-    }));
-  }, [classMarks, teacherChecks, teacherRoles, defaultTeacherRoleId, roles]);
+  const handleCreateClass = async () => {
+    try {
+      const values = await classForm.validateFields();
+      const userIds = checkedKeys
+        .filter((k) => String(k).startsWith('user-'))
+        .map((k) => String(k).replace('user-', ''));
+      const deptKeys = checkedKeys.filter((k) => String(k).startsWith('dept-'));
+      const deptId = deptKeys.length > 0
+        ? Number(String(deptKeys[0]).replace('dept-', ''))
+        : undefined;
 
-  const treeData = useMemo(() => buildTreeData(orgTree), [orgTree, buildTreeData]);
+      setImporting(true);
+      await api.post('/classes', { ...values, dingUserIds: userIds, departmentId: deptId });
+      message.success('班级创建成功');
+      setClassModalOpen(false);
+      classForm.resetFields();
+      setCheckedKeys([]);
+      fetchClasses();
+    } catch (e: unknown) {
+      const err = e as { message?: string };
+      message.error(err?.message || '创建失败');
+    } finally {
+      setImporting(false);
+    }
+  };
 
   const syncTabItems = config
     ? [
@@ -448,7 +319,7 @@ const IntegrationConfigPage: React.FC = () => {
             <div>
               <Alert
                 type="info"
-                message="从钉钉获取组织架构，勾选老师并分配角色，其余用户将作为学生导入。"
+                message="从钉钉获取组织架构，勾选用户后批量导入到班级。"
                 style={{ marginBottom: 16 }}
                 showIcon
               />
@@ -472,78 +343,103 @@ 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"
+                  title="钉钉组织架构 — 批量导入"
                   open={drawerOpen}
-                  onClose={() => { setDrawerOpen(false); setClassMarks({}); }}
-                  width={520}
+                  onClose={() => { setDrawerOpen(false); }}
+                  width={900}
                   footer={
                     <Space>
-                      <Button onClick={() => { setDrawerOpen(false); setClassMarks({}); }}>取消</Button>
+                      <Button onClick={() => { setDrawerOpen(false); }}>取消</Button>
                       <Button
                         type="primary"
-                        icon={<ReloadOutlined />}
                         loading={importing}
-                        disabled={!defaultTeacherRoleId}
-                        title={!defaultTeacherRoleId ? '角色列表未加载，无法导入' : undefined}
-                        onClick={handleImportUsers}
-                      >
-                        导入
-                      </Button>
+                        disabled={checkedKeys.filter((k) => String(k).startsWith('user-')).length === 0 || selectedClassId === null}
+                        onClick={handleJoinClass}
+                      >加入选中的班级</Button>
+                      <Button
+                        disabled={checkedKeys.filter((k) => String(k).startsWith('user-')).length === 0}
+                        onClick={() => setClassModalOpen(true)}
+                      >创建班级</Button>
                     </Space>
                   }
                 >
-                  {treeData.length > 0 ? (
-                    <Tree
-                      treeData={treeData}
-                      defaultExpandAll
-                      blockNode
-                      showLine={{ showLeafIcon: false }}
-                    />
-                  ) : (
-                    <Spin />
-                  )}
+                  <Row gutter={16}>
+                    <Col span={14}>
+                      <div style={{ maxHeight: '60vh', overflow: 'auto' }}>
+                        <Tree
+                          checkable
+                          treeData={treeData}
+                          defaultExpandAll
+                          showLine={{ showLeafIcon: false }}
+                          checkedKeys={checkedKeys}
+                          onCheck={(checked) => setCheckedKeys(checked as React.Key[])}
+                        />
+                      </div>
+                    </Col>
+                    <Col span={10}>
+                      <Card title="班级列表" size="small"
+                        extra={<Button size="small" onClick={() => setClassModalOpen(true)}>+ 创建班级</Button>}>
+                        <List
+                          dataSource={classes}
+                          renderItem={(cls: ClassItem) => (
+                            <List.Item
+                              onClick={() => setSelectedClassId(cls.id)}
+                              style={{
+                                cursor: 'pointer',
+                                background: selectedClassId === cls.id ? '#e6f4ff' : undefined,
+                                borderRadius: 4,
+                                padding: '8px 12px',
+                              }}
+                            >
+                              <List.Item.Meta title={cls.name} description={`${cls.code}  ${cls.classType || ''}`} />
+                            </List.Item>
+                          )}
+                        />
+                      </Card>
+                    </Col>
+                  </Row>
+
+                  { /* Create class Modal */ }
+                  <Modal
+                    title="创建班级"
+                    open={classModalOpen}
+                    onOk={handleCreateClass}
+                    onCancel={() => { setClassModalOpen(false); classForm.resetFields(); }}
+                    confirmLoading={importing}
+                    destroyOnClose
+                  >
+                    <Form form={classForm} layout="vertical">
+                      <Form.Item name="name" label="班级名称" rules={[{ required: true }]}>
+                        <Input />
+                      </Form.Item>
+                      <Form.Item name="code" label="班级编码" rules={[{ required: true }]}>
+                        <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=不限制" />
+                      </Form.Item>
+                      <Form.Item name="notes" label="备注">
+                        <Input.TextArea rows={2} />
+                      </Form.Item>
+                    </Form>
+                  </Modal>
                 </Drawer>
               )}
             </div>