diff --git a/backend/src/main/java/com/twtw/backend/domain/member/controller/AuthController.java b/backend/src/main/java/com/twtw/backend/domain/member/controller/AuthController.java
index 5e8b9c55..5690e0c2 100644
--- a/backend/src/main/java/com/twtw/backend/domain/member/controller/AuthController.java
+++ b/backend/src/main/java/com/twtw/backend/domain/member/controller/AuthController.java
@@ -46,9 +46,8 @@ public ResponseEntity<AfterLoginResponse> afterSocialLogin(
     }
 
     @PostMapping("/device")
-    public ResponseEntity<Void> saveDeviceToken(@RequestBody DeviceTokenRequest request){
+    public ResponseEntity<Void> saveDeviceToken(@RequestBody DeviceTokenRequest request) {
         authService.saveDeviceToken(request);
         return ResponseEntity.noContent().build();
     }
-
 }
diff --git a/backend/src/main/java/com/twtw/backend/domain/member/dto/request/DeviceTokenRequest.java b/backend/src/main/java/com/twtw/backend/domain/member/dto/request/DeviceTokenRequest.java
index b128bbd2..b7e8a9db 100644
--- a/backend/src/main/java/com/twtw/backend/domain/member/dto/request/DeviceTokenRequest.java
+++ b/backend/src/main/java/com/twtw/backend/domain/member/dto/request/DeviceTokenRequest.java
@@ -4,8 +4,6 @@
 import lombok.Getter;
 import lombok.NoArgsConstructor;
 
-import java.util.UUID;
-
 @Getter
 @NoArgsConstructor
 @AllArgsConstructor
diff --git a/backend/src/main/java/com/twtw/backend/domain/member/entity/DeviceToken.java b/backend/src/main/java/com/twtw/backend/domain/member/entity/DeviceToken.java
index 6d60555b..0d9b7da9 100644
--- a/backend/src/main/java/com/twtw/backend/domain/member/entity/DeviceToken.java
+++ b/backend/src/main/java/com/twtw/backend/domain/member/entity/DeviceToken.java
@@ -3,11 +3,14 @@
 import com.twtw.backend.global.audit.AuditListener;
 import com.twtw.backend.global.audit.Auditable;
 import com.twtw.backend.global.audit.BaseTime;
+
 import jakarta.persistence.*;
+
 import lombok.AccessLevel;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
 import lombok.Setter;
+
 import org.hibernate.annotations.Where;
 
 import java.util.UUID;
@@ -34,10 +37,11 @@ public class DeviceToken implements Auditable {
     @Column(nullable = false)
     private BaseTime baseTime;
 
-    public DeviceToken(String deviceToken){
+    public DeviceToken(String deviceToken) {
         this.deviceToken = deviceToken;
     }
 
-    public void setMember(Member member){this.member = member;}
-
+    public void setMember(Member member) {
+        this.member = member;
+    }
 }
diff --git a/backend/src/main/java/com/twtw/backend/domain/member/entity/Member.java b/backend/src/main/java/com/twtw/backend/domain/member/entity/Member.java
index 8844164a..ef7226d1 100644
--- a/backend/src/main/java/com/twtw/backend/domain/member/entity/Member.java
+++ b/backend/src/main/java/com/twtw/backend/domain/member/entity/Member.java
@@ -72,7 +72,7 @@ public void updateProfileImage(final String profileImage) {
         this.profileImage = profileImage;
     }
 
-    public void updateDeviceToken(final DeviceToken deviceToken){
+    public void updateDeviceToken(final DeviceToken deviceToken) {
         this.deviceToken = deviceToken;
         deviceToken.setMember(this);
     }
diff --git a/backend/src/main/java/com/twtw/backend/domain/member/repository/DeviceTokenRepository.java b/backend/src/main/java/com/twtw/backend/domain/member/repository/DeviceTokenRepository.java
index cc44449a..92fce073 100644
--- a/backend/src/main/java/com/twtw/backend/domain/member/repository/DeviceTokenRepository.java
+++ b/backend/src/main/java/com/twtw/backend/domain/member/repository/DeviceTokenRepository.java
@@ -1,9 +1,9 @@
 package com.twtw.backend.domain.member.repository;
 
 import com.twtw.backend.domain.member.entity.DeviceToken;
+
 import org.springframework.data.jpa.repository.JpaRepository;
 
 import java.util.UUID;
 
-public interface DeviceTokenRepository extends JpaRepository<DeviceToken, UUID> {
-}
+public interface DeviceTokenRepository extends JpaRepository<DeviceToken, UUID> {}
diff --git a/backend/src/main/java/com/twtw/backend/domain/member/service/AuthService.java b/backend/src/main/java/com/twtw/backend/domain/member/service/AuthService.java
index bee5ecf5..b994a4a9 100644
--- a/backend/src/main/java/com/twtw/backend/domain/member/service/AuthService.java
+++ b/backend/src/main/java/com/twtw/backend/domain/member/service/AuthService.java
@@ -73,7 +73,6 @@ public AfterLoginResponse saveMember(MemberSaveRequest request) {
         return new AfterLoginResponse(AuthStatus.SIGNIN, tokenDto);
     }
 
-
     private void validateNickname(final MemberSaveRequest request) {
         if (memberRepository.existsByNickname(request.getNickname())) {
             throw new NicknameExistsException();
@@ -151,9 +150,8 @@ public Member getMemberByJwt() {
         throw new EntityNotFoundException();
     }
 
-
     @Transactional
-    public void saveDeviceToken(DeviceTokenRequest request){
+    public void saveDeviceToken(DeviceTokenRequest request) {
         Member member = getMemberByJwt();
         DeviceToken deviceToken = new DeviceToken(request.getDeviceToken());
         member.updateDeviceToken(deviceToken);
diff --git a/backend/src/main/java/com/twtw/backend/domain/member/service/MemberService.java b/backend/src/main/java/com/twtw/backend/domain/member/service/MemberService.java
index e29eee70..aa01771a 100644
--- a/backend/src/main/java/com/twtw/backend/domain/member/service/MemberService.java
+++ b/backend/src/main/java/com/twtw/backend/domain/member/service/MemberService.java
@@ -1,18 +1,15 @@
 package com.twtw.backend.domain.member.service;
 
-import com.twtw.backend.domain.member.dto.request.DeviceTokenRequest;
 import com.twtw.backend.domain.member.dto.response.DuplicateNicknameResponse;
 import com.twtw.backend.domain.member.dto.response.MemberResponse;
 import com.twtw.backend.domain.member.dto.response.SearchMemberResponse;
 import com.twtw.backend.domain.member.entity.Member;
 import com.twtw.backend.domain.member.mapper.MemberMapper;
-import com.twtw.backend.domain.member.repository.DeviceTokenRepository;
 import com.twtw.backend.domain.member.repository.MemberRepository;
 import com.twtw.backend.domain.plan.entity.Plan;
 import com.twtw.backend.global.exception.EntityNotFoundException;
 
 import org.springframework.stereotype.Service;
-import org.springframework.transaction.annotation.Transactional;
 
 import java.util.List;
 import java.util.Optional;
diff --git a/backend/src/test/java/com/twtw/backend/domain/member/controller/AuthControllerTest.java b/backend/src/test/java/com/twtw/backend/domain/member/controller/AuthControllerTest.java
index 4ae38965..5df773ca 100644
--- a/backend/src/test/java/com/twtw/backend/domain/member/controller/AuthControllerTest.java
+++ b/backend/src/test/java/com/twtw/backend/domain/member/controller/AuthControllerTest.java
@@ -160,8 +160,7 @@ void saveDeviceToken() throws Exception {
                 mockMvc.perform(
                         post("/auth/device")
                                 .content(
-                                        toRequestBody(
-                                                new DeviceTokenRequest("THIS_IS_TEST_TOKEN")))
+                                        toRequestBody(new DeviceTokenRequest("THIS_IS_TEST_TOKEN")))
                                 .contentType(MediaType.APPLICATION_JSON));
 
         // then
diff --git a/backend/src/test/java/com/twtw/backend/domain/member/service/AuthServiceTest.java b/backend/src/test/java/com/twtw/backend/domain/member/service/AuthServiceTest.java
index 583baac0..c5ce7d0c 100644
--- a/backend/src/test/java/com/twtw/backend/domain/member/service/AuthServiceTest.java
+++ b/backend/src/test/java/com/twtw/backend/domain/member/service/AuthServiceTest.java
@@ -2,13 +2,11 @@
 
 import static org.assertj.core.api.Assertions.assertThat;
 
-import com.twtw.backend.domain.member.dto.request.DeviceTokenRequest;
 import com.twtw.backend.domain.member.dto.request.MemberSaveRequest;
 import com.twtw.backend.domain.member.dto.request.OAuthRequest;
 import com.twtw.backend.domain.member.dto.response.AfterLoginResponse;
 import com.twtw.backend.domain.member.entity.AuthStatus;
 import com.twtw.backend.domain.member.entity.AuthType;
-import com.twtw.backend.domain.member.entity.DeviceToken;
 import com.twtw.backend.domain.member.entity.Member;
 import com.twtw.backend.domain.member.repository.MemberRepository;
 import com.twtw.backend.domain.member.repository.RefreshTokenRepository;
@@ -30,7 +28,6 @@ public class AuthServiceTest extends ExcludeTest {
 
     @Autowired private RefreshTokenRepository refreshTokenRepository;
 
-
     @Test
     @DisplayName("Kakao 회원 가입이 수행되는가")
     void saveMemberKakao() {
@@ -81,5 +78,4 @@ void getTokenByOAuthSuccess() {
         // then
         assertThat(response.getStatus().equals(AuthStatus.SIGNIN)).isTrue();
     }
-
 }
diff --git a/backend/src/test/java/com/twtw/backend/domain/member/service/MemberServiceTest.java b/backend/src/test/java/com/twtw/backend/domain/member/service/MemberServiceTest.java
index 5e46c7e3..8a01bfaf 100644
--- a/backend/src/test/java/com/twtw/backend/domain/member/service/MemberServiceTest.java
+++ b/backend/src/test/java/com/twtw/backend/domain/member/service/MemberServiceTest.java
@@ -3,11 +3,9 @@
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
-import com.twtw.backend.domain.member.dto.request.DeviceTokenRequest;
 import com.twtw.backend.domain.member.dto.response.DuplicateNicknameResponse;
 import com.twtw.backend.domain.member.dto.response.MemberResponse;
 import com.twtw.backend.domain.member.dto.response.SearchMemberResponse;
-import com.twtw.backend.domain.member.entity.DeviceToken;
 import com.twtw.backend.domain.member.entity.Member;
 import com.twtw.backend.domain.member.repository.MemberRepository;
 import com.twtw.backend.fixture.member.MemberEntityFixture;
@@ -22,7 +20,6 @@ class MemberServiceTest extends LoginTest {
     @Autowired private MemberService memberService;
     @Autowired private MemberRepository memberRepository;
 
-
     @Test
     @DisplayName("닉네임 중복 체크가 제대로 동작하는가")
     void checkNickname() {
@@ -73,5 +70,4 @@ void searchMemberByNickname() {
         // then
         assertThat(response.getMemberResponse().getMemberId()).isEqualTo(member.getId());
     }
-
 }