diff --git a/src/domain/notifyTypes.ts b/src/domain/notifyTypes.ts
new file mode 100644
index 0000000..8d1396f
--- /dev/null
+++ b/src/domain/notifyTypes.ts
@@ -0,0 +1,28 @@
+/** Business notify_type strings — kept in app layer (not @authcore/commons). Align with huike-back raw_notify handlers. */
+
+export enum NotifyTypes {
+  TeacherRegister = 'teacher_register',
+  StudentRegister = 'student_register',
+  RejectRegister = 'reject_register',
+  StudentRegisterApproved = 'student_register_success',
+  TeacherRegisterApproved = 'teacher_register_success',
+  TeacherCommentPiyue = 'teacher_comment_piyue',
+  StudentCommentPiyue = 'student_comment_piyue',
+  JihuaCreate = 'create_jihua',
+  JihuaUpdate = 'update_jihua',
+  JihuaDelete = 'delete_jihua',
+  LianxiCreate = 'create_lianxi',
+  LianxiDelete = 'delete_lianxi',
+  PiyueCreate = 'create_piyue',
+  TeacherCommentJihua = 'teacher_comment_jihua',
+  StudentCommentJihua = 'student_comment_jihua',
+  TeacherCommentDaka = 'teacher_comment_daka',
+  StudentCommentDaka = 'student_comment_daka',
+  DakaCreate = 'create_daka',
+  DakaUpdate = 'update_daka',
+  DakaDelete = 'delete_daka',
+  ResourceNoteGroupCreate = 'create_resource_note_group',
+  ClazzCreateOrUpdate = 'create_or_update_clazz',
+  ClazzDelete = 'delete_clazz',
+  TeacherCommentClazz = 'teacher_comment_clazz',
+}
diff --git a/src/types.ts b/src/types.ts
index 89680a9..a38c8b0 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -37,13 +37,14 @@ export {
   HtyBaseRoles,
   HtySuperRoles,
   TongzhiStatuses,
-  NotifyTypes,
   TaskFrom,
   TaskStatuses,
   TaskTypes,
   GroupTypes,
 } from '@authcore/commons';
 
+export { NotifyTypes } from './domain/notifyTypes';
+
 export type { TeacherInfo, StudentInfo } from '@authcore/commons';
 
 export interface HtyUser extends CommonsHtyUser {