diff --git a/server/apps/api/src/auth/auth.controller.ts b/server/apps/api/src/auth/auth.controller.ts
index 1ce9e73c..0987bd54 100644
--- a/server/apps/api/src/auth/auth.controller.ts
+++ b/server/apps/api/src/auth/auth.controller.ts
@@ -1,10 +1,11 @@
 import { Body, Controller, Post } from '@nestjs/common';
 import { AuthService } from './auth.service';
-import { SignInDto, SignUpDto } from './dto';
+import { SignUpDto } from './dto';
 
 @Controller('api/user/auth')
 export class AuthController {
   constructor(private authService: AuthService) {}
+
   @Post('signup')
   signup(@Body() dto: SignUpDto) {
     return this.authService.signup(dto);
diff --git a/server/apps/api/src/auth/auth.service.ts b/server/apps/api/src/auth/auth.service.ts
index c7cc4d05..80f3e5c5 100644
--- a/server/apps/api/src/auth/auth.service.ts
+++ b/server/apps/api/src/auth/auth.service.ts
@@ -1,7 +1,8 @@
-import { Injectable } from '@nestjs/common';
+import { ForbiddenException, Injectable } from '@nestjs/common';
 import { SignUpDto } from './dto';
 import * as argon from 'argon2';
 import { UserRepository } from '@repository/user.repository';
+import { responseForm } from '@utils/responseForm';
 
 @Injectable()
 export class AuthService {
@@ -9,9 +10,14 @@ export class AuthService {
   async signup(dto: SignUpDto) {
     const hash = await argon.hash(dto.password);
     try {
-      const user = await this.userRepository.signup(dto);
+      await this.userRepository.create({ ...dto, password: hash });
     } catch (error) {
+      if (error.name === 'MongoServerError' && error.code === 11000)
+        // 아이디 중복시 에러
+        throw new ForbiddenException('아이디가 중복되었습니다.');
       throw error;
     }
+
+    return responseForm('200', '회원가입 성공!');
   }
 }