diff --git a/backend/services/auth-service/src/api/controllers/sms.controller.ts b/backend/services/auth-service/src/api/controllers/sms.controller.ts
index 7fa2f668..3e082b38 100644
--- a/backend/services/auth-service/src/api/controllers/sms.controller.ts
+++ b/backend/services/auth-service/src/api/controllers/sms.controller.ts
@@ -7,18 +7,33 @@ import {
   UseGuards,
 } from '@nestjs/common';
 import { ThrottlerGuard } from '@nestjs/throttler';
+import { IsString, IsNotEmpty, IsEnum, Matches } from 'class-validator';
 import { SmsService } from '@/application/services';
 import { SmsVerificationType } from '@/domain';
 
 class SendSmsDto {
+  @IsString()
+  @IsNotEmpty({ message: '手机号不能为空' })
+  @Matches(/^1[3-9]\d{9}$/, { message: '手机号格式不正确' })
   phone: string;
-  type: 'REGISTER' | 'LOGIN' | 'RESET_PASSWORD' | 'CHANGE_PHONE';
+
+  @IsEnum(SmsVerificationType, { message: '验证码类型无效' })
+  type: SmsVerificationType;
 }
 
 class VerifySmsDto {
+  @IsString()
+  @IsNotEmpty({ message: '手机号不能为空' })
+  @Matches(/^1[3-9]\d{9}$/, { message: '手机号格式不正确' })
   phone: string;
+
+  @IsString()
+  @IsNotEmpty({ message: '验证码不能为空' })
+  @Matches(/^\d{6}$/, { message: '验证码格式不正确' })
   code: string;
-  type: 'REGISTER' | 'LOGIN' | 'RESET_PASSWORD' | 'CHANGE_PHONE';
+
+  @IsEnum(SmsVerificationType, { message: '验证码类型无效' })
+  type: SmsVerificationType;
 }
 
 @Controller('auth/sms')