diff --git a/src/main/java/ongjong/namanmoo/controller/MemberController.java b/src/main/java/ongjong/namanmoo/controller/MemberController.java
index aee5122..78a4adf 100644
--- a/src/main/java/ongjong/namanmoo/controller/MemberController.java
+++ b/src/main/java/ongjong/namanmoo/controller/MemberController.java
@@ -11,6 +11,7 @@
 import ongjong.namanmoo.response.ApiResponse;
 import ongjong.namanmoo.service.AwsS3Service;
 import ongjong.namanmoo.service.MemberService;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
@@ -19,6 +20,7 @@
 
 import java.util.HashMap;
 import java.util.Map;
+import java.util.Optional;
 
 @Slf4j
 @RestController
@@ -56,27 +58,23 @@ public ResponseEntity<ApiResponse<Map<String, Boolean>>> duplicate(@Valid @Reque
     // 회원 정보 수정
     @PostMapping("/users")
     @ResponseStatus(HttpStatus.OK)
-    public ApiResponse<MemberInfoDto> updateBasicInfo(
-            @RequestPart("userInfo") MemberUpdateDto memberUpdateDto,
-            @RequestPart(value = "userImg", required = false) MultipartFile userImg) throws Exception {
+    public ApiResponse<MemberInfoDto> updateBasicInfo(@RequestPart("userInfo") MemberUpdateDto memberUpdateDto,
+                                                      @RequestPart("userImg") Optional<MultipartFile> userImg) throws Exception {
 
-        log.debug("Received MemberUpdateDto: {}", memberUpdateDto);
-        log.debug("Received MultipartFile: {}", userImg);
-
-        String uploadImageUrl = null;
+        log.info("Received MemberUpdateDto: {}", memberUpdateDto);
+        log.info("Received MultipartFile: {}", userImg);
 
         // 파일을 전송했을 경우에만 S3 파일 업로드 수행
-        if (userImg != null && !userImg.isEmpty()) {
+        if (userImg.isPresent() && !userImg.get().isEmpty()) {
             log.debug("Uploading file to S3...");
-            uploadImageUrl = awsS3Service.uploadFile(userImg);
+            String uploadImageUrl = awsS3Service.uploadFile(userImg.get());
             log.debug("File uploaded to S3: {}", uploadImageUrl);
         }
 
         log.debug("Updating member information...");
-        memberService.update(memberUpdateDto);
+        memberService.update(memberUpdateDto, userImg);
         log.debug("Member information updated.");
 
-        // MemberService의 update 메소드에서 imagePath를 갱신해야 합니다.
         MemberInfoDto info = memberService.getMyInfo();
         log.debug("Member info retrieved: {}", info);
         return new ApiResponse<>("200", "Update User Info Success", info);
diff --git a/src/main/java/ongjong/namanmoo/service/AwsS3Service.java b/src/main/java/ongjong/namanmoo/service/AwsS3Service.java
index 81d5acd..a7de7ed 100644
--- a/src/main/java/ongjong/namanmoo/service/AwsS3Service.java
+++ b/src/main/java/ongjong/namanmoo/service/AwsS3Service.java
@@ -6,7 +6,10 @@
 import java.util.Optional;
 import java.util.UUID;
 
+import com.amazonaws.auth.AWSStaticCredentialsProvider;
+import com.amazonaws.auth.BasicAWSCredentials;
 import com.amazonaws.services.s3.AmazonS3;
+import com.amazonaws.services.s3.AmazonS3ClientBuilder;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Value;
@@ -20,15 +23,26 @@
 import lombok.RequiredArgsConstructor;
 
 @Slf4j
-@RequiredArgsConstructor
 @Service
 public class AwsS3Service {
 
-    @Autowired
-    private AmazonS3 amazonS3Client;
+    private final AmazonS3 amazonS3Client;
+    private final String bucket;
 
-    @Value("${cloud.aws.s3.bucket}")
-    private String bucket;
+    public AwsS3Service(
+
+            @Value("${cloud.aws.credentials.access-key}") String accessKeyId,
+            @Value("${cloud.aws.credentials.secret-key}") String secretKey,
+            @Value("${cloud.aws.s3.bucket}") String bucket,
+            @Value("${cloud.aws.region.static}") String region) {
+
+        BasicAWSCredentials awsCreds = new BasicAWSCredentials(accessKeyId, secretKey);
+        this.amazonS3Client = AmazonS3ClientBuilder.standard()
+                .withRegion(region)
+                .withCredentials(new AWSStaticCredentialsProvider(awsCreds))
+                .build();
+        this.bucket = bucket;
+    }
 
     public String uploadFile(MultipartFile multipartFile) throws IOException {
         log.debug("Converting MultipartFile to File...");
diff --git a/src/main/java/ongjong/namanmoo/service/MemberService.java b/src/main/java/ongjong/namanmoo/service/MemberService.java
index 6463a6e..e40840b 100644
--- a/src/main/java/ongjong/namanmoo/service/MemberService.java
+++ b/src/main/java/ongjong/namanmoo/service/MemberService.java
@@ -6,6 +6,9 @@
 import ongjong.namanmoo.dto.member.MemberSignUpDto;
 import ongjong.namanmoo.dto.member.MemberUpdateDto;
 import org.springframework.transaction.annotation.Transactional;
+import org.springframework.web.multipart.MultipartFile;
+
+import java.util.Optional;
 
 public interface MemberService {
 
@@ -21,7 +24,7 @@ public interface MemberService {
     // 아이디 중복 체크
     boolean isDuplicateId(LoginRequestDto loginRequestDto);
 
-    void update(MemberUpdateDto memberUpdateDto) throws Exception;
+    void update(MemberUpdateDto memberUpdateDto, Optional<MultipartFile> userImg) throws Exception;
 
     void updatePassword(String checkPassword, String toBePassword) throws Exception;
 
diff --git a/src/main/java/ongjong/namanmoo/service/MemberServiceImpl.java b/src/main/java/ongjong/namanmoo/service/MemberServiceImpl.java
index 3ed6e03..953681e 100644
--- a/src/main/java/ongjong/namanmoo/service/MemberServiceImpl.java
+++ b/src/main/java/ongjong/namanmoo/service/MemberServiceImpl.java
@@ -11,6 +11,7 @@
 import org.springframework.security.crypto.password.PasswordEncoder;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
+import org.springframework.web.multipart.MultipartFile;
 
 import java.util.Optional;
 
@@ -48,7 +49,7 @@ public boolean isDuplicateId(LoginRequestDto loginRequestDto) {
 
     // 회원 정보 수정
     @Override
-    public void update (MemberUpdateDto memberUpdateDto) throws Exception {
+    public void update(MemberUpdateDto memberUpdateDto, Optional<MultipartFile> userImg) throws Exception {
         Member member = memberRepository
                 .findByLoginId(SecurityUtil.getLoginLoginId())
                 .orElseThrow(() -> new Exception("회원이 존재하지 않습니다"));
@@ -57,15 +58,18 @@ public void update (MemberUpdateDto memberUpdateDto) throws Exception {
         memberUpdateDto.name().ifPresent(member::setName);
         memberUpdateDto.nickname().ifPresent(member::setNickname);
         memberUpdateDto.role().ifPresent(member::setRole);
+
         // 파일을 전송했을 경우에만 S3 파일 업로드 수행
-        memberUpdateDto.userImg().ifPresent(image -> {
+        if (userImg.isPresent() && !userImg.get().isEmpty()) {
             try {
-                String imagePath = awsS3Service.uploadFile(image);
+                String imagePath = awsS3Service.uploadFile(userImg.get());
                 member.setMemberImage(imagePath);
             } catch (IOException e) {
                 throw new RuntimeException("S3 업로드 중 에러가 발생했습니다.", e);
             }
-        });
+        }
+
+        memberRepository.save(member);
     }
 
     // 비밀번호 변경 -> 비밀번호를 입력 받는다
@@ -108,4 +112,4 @@ public MemberInfoDto getMyInfo() throws Exception {
     public Member findMemberByLoginId() throws Exception{
         return memberRepository.findByLoginId(SecurityUtil.getLoginLoginId()).orElseThrow(() -> new Exception("회원이 없습니다"));
     }
-}
+}
\ No newline at end of file