diff --git a/backend/services/identity-service/src/api/controllers/internal.controller.ts b/backend/services/identity-service/src/api/controllers/internal.controller.ts
index df1eca24..1f82a56f 100644
--- a/backend/services/identity-service/src/api/controllers/internal.controller.ts
+++ b/backend/services/identity-service/src/api/controllers/internal.controller.ts
@@ -3,6 +3,7 @@ import { ApiTags, ApiOperation, ApiResponse, ApiProperty } from '@nestjs/swagger
 import { IsArray, IsString } from 'class-validator';
 import { Public } from '@/shared/guards/jwt-auth.guard';
 import { UserAccountRepositoryImpl } from '@/infrastructure/persistence/repositories/user-account.repository.impl';
+import { PrismaService } from '@/infrastructure/persistence/prisma/prisma.service';
 import { AccountSequence } from '@/domain/value-objects';
 
 /**
@@ -52,6 +53,7 @@ export class InternalController {
 
   constructor(
     private readonly userRepository: UserAccountRepositoryImpl,
+    private readonly prisma: PrismaService,
   ) {}
 
   @Public()
@@ -119,22 +121,24 @@ export class InternalController {
     this.logger.debug(`[getUserDetailBySequence] 查询用户详情: ${accountSequence}`);
 
     try {
-      const sequence = AccountSequence.create(accountSequence);
-      const user = await this.userRepository.findByAccountSequence(sequence);
+      // 直接使用 Prisma 查询以获取所有字段（包括 email、realName 等领域模型中未暴露的字段）
+      const user = await this.prisma.userAccount.findUnique({
+        where: { accountSequence },
+      });
 
       if (!user) {
         return null;
       }
 
       return {
-        userId: user.userId.value.toString(),
-        accountSequence: user.accountSequence.value,
+        userId: user.userId.toString(),
+        accountSequence: user.accountSequence,
         nickname: user.nickname,
         avatarUrl: user.avatarUrl || undefined,
-        phoneNumber: user.phoneNumber?.value || undefined,
+        phoneNumber: user.phoneNumber || undefined,
         email: user.email || undefined,
         registeredAt: user.registeredAt.toISOString(),
-        inviterSequence: user.inviterSequence?.value || undefined,
+        inviterSequence: user.inviterSequence || undefined,
         kycStatus: user.kycStatus,
         realName: user.realName || undefined,
       };