diff --git a/backend/services/mining-admin-service/src/application/services/notification.service.ts b/backend/services/mining-admin-service/src/application/services/notification.service.ts
index 2ec095f9..1526f88a 100644
--- a/backend/services/mining-admin-service/src/application/services/notification.service.ts
+++ b/backend/services/mining-admin-service/src/application/services/notification.service.ts
@@ -1,12 +1,12 @@
 import { Injectable } from '@nestjs/common';
 import { PrismaService } from '../../infrastructure/persistence/prisma/prisma.service';
-import { NotificationType, TargetType, Prisma } from '@prisma/client';
+import { NotificationType, NotificationPriority, TargetType, Prisma } from '@prisma/client';
 
 export interface CreateNotificationDto {
   title: string;
   content: string;
   type?: NotificationType;
-  priority?: string;
+  priority?: NotificationPriority;
   targetType?: TargetType;
   targetConfig?: {
     accountSequences?: string[];
@@ -22,7 +22,7 @@ export interface UpdateNotificationDto {
   title?: string;
   content?: string;
   type?: NotificationType;
-  priority?: string;
+  priority?: NotificationPriority;
   targetType?: TargetType;
   targetConfig?: {
     accountSequences?: string[];