diff --git a/apps/admin/src/pages/IntegrationConfig/index.tsx b/apps/admin/src/pages/IntegrationConfig/index.tsx
index bb2b6a5..0a9b1fb 100644
--- a/apps/admin/src/pages/IntegrationConfig/index.tsx
+++ b/apps/admin/src/pages/IntegrationConfig/index.tsx
@@ -209,16 +209,30 @@ const IntegrationConfigPage: React.FC = () => {
 
   const treeData = useMemo(() => buildTreeData(orgTree), [orgTree, buildTreeData]);
 
+  const extractCheckedUsers = useCallback((): Array<{ dingUserId: string; name: string; mobile?: string }> => {
+    const result: Array<{ dingUserId: string; name: string; mobile?: string }> = [];
+    const walk = (nodes: DingOrgTreeNodeExt[]) => {
+      for (const node of nodes) {
+        for (const u of node.users) {
+          if (checkedKeys.includes(`user-${u.userid}`)) {
+            result.push({ dingUserId: u.userid, name: u.name, mobile: u.mobile || undefined });
+          }
+        }
+        walk(node.children);
+      }
+    };
+    walk(orgTree);
+    return result;
+  }, [checkedKeys, orgTree]);
+
   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 users = extractCheckedUsers();
+    if (users.length === 0) return message.warning('请勾选要导入的用户');
 
     setImporting(true);
     try {
-      const res = await api.post<ImportResult>(`/classes/${selectedClassId}/students/import`, { dingUserIds: userIds });
+      const res = await api.post<ImportResult>(`/classes/${selectedClassId}/students/import`, { users });
       message.success(`导入 ${res.imported} 人，跳过 ${res.skipped} 人`);
       setCheckedKeys([]);
       setSelectedClassId(null);
@@ -233,10 +247,8 @@ const IntegrationConfigPage: React.FC = () => {
   const handleCreateClass = async () => {
     try {
       const values = await classForm.validateFields();
-      const userIds = checkedKeys
-        .filter((k) => String(k).startsWith('user-'))
-        .map((k) => String(k).replace('user-', ''));
-      await api.post('/classes', { ...values, dingUserIds: userIds });
+      const users = extractCheckedUsers();
+      await api.post('/classes', { ...values, users });
       message.success('班级创建成功');
       setClassModalOpen(false);
       classForm.resetFields();