diff --git a/backend/services/authorization-service/src/infrastructure/external/identity-service.client.ts b/backend/services/authorization-service/src/infrastructure/external/identity-service.client.ts
index f6dc32fd..79e44c49 100644
--- a/backend/services/authorization-service/src/infrastructure/external/identity-service.client.ts
+++ b/backend/services/authorization-service/src/infrastructure/external/identity-service.client.ts
@@ -54,13 +54,15 @@ export class IdentityServiceClient implements OnModuleInit {
     try {
       this.logger.debug(`[HTTP] POST /internal/users/batch - ${accountSequences.length} users`);
 
-      const response = await this.httpClient.post<UserInfo[]>(
+      const response = await this.httpClient.post<{ success: boolean; data: UserInfo[] }>(
         `/api/v1/internal/users/batch`,
         { accountSequences },
       );
 
-      if (response.data && Array.isArray(response.data)) {
-        for (const user of response.data) {
+      // identity-service 使用 TransformInterceptor 包装响应为 { success, data }
+      const users = response.data?.data || response.data;
+      if (users && Array.isArray(users)) {
+        for (const user of users) {
           result.set(user.accountSequence, user);
         }
       }