diff --git a/src/main/java/EatPic/spring/domain/user/service/UserServiceImpl.java b/src/main/java/EatPic/spring/domain/user/service/UserServiceImpl.java
index 3e02d93..52a577e 100644
--- a/src/main/java/EatPic/spring/domain/user/service/UserServiceImpl.java
+++ b/src/main/java/EatPic/spring/domain/user/service/UserServiceImpl.java
@@ -31,6 +31,7 @@
 import org.springframework.security.core.Authentication;
 import org.springframework.security.crypto.password.PasswordEncoder;
 import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Propagation;
 import org.springframework.transaction.annotation.Transactional;
 import org.springframework.web.multipart.MultipartFile;
 import EatPic.spring.global.aws.s3.*;
@@ -40,7 +41,7 @@
 import static EatPic.spring.global.common.code.status.ErrorStatus.*;
 
 @Service
-@Transactional
+@Transactional(readOnly = true)
 @RequiredArgsConstructor
 public class UserServiceImpl implements UserService{
 
@@ -57,6 +58,7 @@ public class UserServiceImpl implements UserService{
     private final AmazonS3Manager s3Manager;
 
     // 회원가입
+    @Transactional(readOnly = false)
     public SignupResponseDTO signup(SignupRequestDTO request) {
         // 이메일 중복 검사
         if (userRepository.existsByEmail(request.getEmail())) {
@@ -96,6 +98,7 @@ public SignupResponseDTO signup(SignupRequestDTO request) {
 
     // 로그인
     @Override
+    @Transactional(readOnly = false)
     public LoginResponseDTO loginUser(LoginRequestDTO request){
         User user = userRepository.findByEmail(request.getEmail())
                 .orElseThrow(()-> new ExceptionHandler(ErrorStatus.MEMBER_NOT_FOUND));
@@ -247,6 +250,7 @@ public boolean isNicknameDuplicate(String nickname) {
     }
 
     @Override
+    @Transactional(propagation = Propagation.REQUIRES_NEW, readOnly = false)
     public User getLoginUser(HttpServletRequest request) {
         Authentication authentication = jwtTokenProvider.extractAuthentication(request);
         String email = authentication.getName();
@@ -269,6 +273,7 @@ public UserResponseDTO.DetailProfileDto getProfile(HttpServletRequest request, L
     }
 
     @Override
+    @Transactional(readOnly = false)
     public UserResponseDTO.UserActionResponseDto unfollowUser(HttpServletRequest request, Long targetUserId) {
         User user = getLoginUser(request);
         User target = userRepository.findUserById(targetUserId);
@@ -284,6 +289,7 @@ public UserResponseDTO.UserActionResponseDto unfollowUser(HttpServletRequest req
     }
 
     @Override
+    @Transactional(readOnly = false)
     public UserResponseDTO.UserActionResponseDto followUser(HttpServletRequest request, Long targetUserId) {
         User user = getLoginUser(request);
         if(user.getId().equals(targetUserId)) {
@@ -306,6 +312,7 @@ public UserResponseDTO.UserActionResponseDto followUser(HttpServletRequest reque
 
     // 유저 프로필 이미지 업데이트
     @Override
+    @Transactional(readOnly = false)
     public UserResponseDTO.ProfileDto updateUserProfileImage(HttpServletRequest request, MultipartFile profileImage,User user) {
 
         String profileImageUrl = null;
@@ -335,6 +342,7 @@ public UserResponseDTO.ProfileDto updateUserProfileImage(HttpServletRequest requ
 
     // 유저 소개 업데이트
     @Override
+    @Transactional(readOnly = false)
     public UserResponseDTO.ProfileDto updateIntroduce(HttpServletRequest request, UserRequest.UpdateUserInroduceRequest introduce, User user) {
 
         user.setIntroduce(introduce.getIntroduce()); // introduce 부분만 변경