diff --git a/build.gradle b/build.gradle
index 4070cf3..63e1ad4 100644
--- a/build.gradle
+++ b/build.gradle
@@ -30,14 +30,20 @@ dependencies {
 
     runtimeOnly 'com.h2database:h2'
     implementation 'mysql:mysql-connector-java:8.0.29'
+
+    // swagger
     implementation 'io.springfox:springfox-swagger2:2.9.2'
     implementation 'io.springfox:springfox-swagger-ui:2.9.2'
 
+    // swagger 어노테이션 라이브러리
+    implementation 'io.swagger:swagger-annotations:1.5.21'
+
     // AWS 연동
     implementation 'org.springframework.cloud:spring-cloud-starter-aws:2.2.6.RELEASE'
 
     // 채팅 - WebSocket
     implementation 'org.springframework.boot:spring-boot-starter-websocket'
+
 }
 
 tasks.named('test') {
diff --git a/src/main/java/com/zatch/zatchserver/controller/UserController.java b/src/main/java/com/zatch/zatchserver/controller/UserController.java
index c860292..cc80b77 100644
--- a/src/main/java/com/zatch/zatchserver/controller/UserController.java
+++ b/src/main/java/com/zatch/zatchserver/controller/UserController.java
@@ -7,9 +7,11 @@
 import com.zatch.zatchserver.dto.*;
 import com.zatch.zatchserver.service.AuthService;
 import com.zatch.zatchserver.service.UserService;
-import io.swagger.annotations.ApiOperation;
+import io.swagger.annotations.*;
 import lombok.RequiredArgsConstructor;
+import org.springframework.http.HttpHeaders;
 import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
 import org.springframework.web.multipart.MultipartFile;
@@ -17,6 +19,7 @@
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 import javax.servlet.http.HttpSession;
+import java.nio.charset.Charset;
 import java.util.*;
 
 @RequiredArgsConstructor
@@ -26,8 +29,11 @@ public class UserController {
     private final UserService userService;
     private final AuthService authService;
 
+    @ApiResponses(value = {
+            @ApiResponse(code = 200, message = "Success", response = GetUserResDto.class, examples = @Example(@ExampleProperty(value = "{'property1': 'value1', 'property2': 'value2'}", mediaType = MediaType.APPLICATION_JSON_VALUE)))
+    })
     @PostMapping("/new")
-    @ApiOperation(value = "회원가입", notes = "회원가입 API")
+    @ApiOperation(value = "회원가입", notes = "회원가입 API", produces = MediaType.APPLICATION_JSON_VALUE)
     public ResponseEntity postUser(@RequestBody PostUserReqDto postUserReqDto, HttpServletResponse response) {
         // 이메일을 통해 회원가입 or 로그인 check
         String isSignup = userService.loginOrSignup(postUserReqDto.getEmail());
@@ -41,15 +47,17 @@ public ResponseEntity postUser(@RequestBody PostUserReqDto postUserReqDto, HttpS
             Collections.shuffle(adjectives);
             Collections.shuffle(animals);
 
+            String nickname = adjectives.get(0) + " " + animals.get(0);
+
             User newUser = new User(
                     postUserReqDto.getName(),
                     postUserReqDto.getEmail(),
-                    adjectives.get(0) + " " + animals.get(0)
+                    nickname
             );
 
             userService.join(newUser);
 
-            PostUserResDto postUserResDto = new PostUserResDto(newUser.getName(), newUser.getEmail(), adjectives.get(0) + " " + animals.get(0));
+            PostUserResDto postUserResDto = new PostUserResDto(newUser.getName(), newUser.getEmail(), nickname);
 
             // 토큰
             String email = postUserReqDto.getEmail();
@@ -58,7 +66,12 @@ public ResponseEntity postUser(@RequestBody PostUserReqDto postUserReqDto, HttpS
             response.addHeader("ACCESS_TOKEN", accessToken);
             String token = userService.token(Long.valueOf(userId), accessToken);
 
-            return new ResponseEntity(DefaultRes.res(StatusCode.OK, ResponseMessage.CREATED_USER, postUserReqDto+" / accessToken : "+token+" / userId : "+userId), HttpStatus.OK);
+            HttpHeaders header = new HttpHeaders();
+            header.setContentType(new MediaType("application", "json", Charset.forName("UTF-8")));
+
+            GetUserResDto getUserResDto = new GetUserResDto(Long.valueOf(userId), postUserReqDto.getName(), nickname, postUserReqDto.getEmail());
+
+            return ResponseEntity.ok().body(getUserResDto);
         }
 
         // 로그인
diff --git a/src/main/java/com/zatch/zatchserver/domain/User.java b/src/main/java/com/zatch/zatchserver/domain/User.java
index 8deb039..7795823 100644
--- a/src/main/java/com/zatch/zatchserver/domain/User.java
+++ b/src/main/java/com/zatch/zatchserver/domain/User.java
@@ -1,8 +1,10 @@
 package com.zatch.zatchserver.domain;
 
 import lombok.Getter;
+import lombok.Setter;
 
 @Getter
+@Setter
 public class User {
     private Long id;
     private String name;
@@ -15,7 +17,6 @@ public class User {
     /*---Constructor---*/
     public User(String name, String email, String nickname) {
         this.name = name;
-        this.nickname = nickname;
         this.email = email;
     }
 
diff --git a/src/main/java/com/zatch/zatchserver/dto/GetUserResDto.java b/src/main/java/com/zatch/zatchserver/dto/GetUserResDto.java
index 547a4c7..9974fe7 100644
--- a/src/main/java/com/zatch/zatchserver/dto/GetUserResDto.java
+++ b/src/main/java/com/zatch/zatchserver/dto/GetUserResDto.java
@@ -2,11 +2,22 @@
 
 import lombok.AllArgsConstructor;
 import lombok.Getter;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
 
 @Getter
 @AllArgsConstructor
+@ApiModel(description = "User 정보")
 public class GetUserResDto {
+    @ApiModelProperty(value = "User Id", example = "1")
+    private Long user_id;
+
+    @ApiModelProperty(value = "User 이름", example = "김수정")
     private String name;
+
+    @ApiModelProperty(value = "User 닉네임", example = "행복한 수달")
     private String nickname;
+
+    @ApiModelProperty(value = "User 이메일", example = "email123@sungshin.ac.kr")
     private String email;
 }