diff --git a/src/main/java/com/acon/server/global/exception/ErrorType.java b/src/main/java/com/acon/server/global/exception/ErrorType.java
index b1a3113..ec9a322 100644
--- a/src/main/java/com/acon/server/global/exception/ErrorType.java
+++ b/src/main/java/com/acon/server/global/exception/ErrorType.java
@@ -51,6 +51,7 @@ public enum ErrorType {
     ALREADY_VERIFIED_AREA_ERROR(HttpStatus.BAD_REQUEST, 40032, "이미 인증된 동네가 존재합니다."),
     INVALID_IMAGE_TYPE_ERROR(HttpStatus.BAD_REQUEST, 40045, "유효하지 않은 imageType입니다."),
     INVALID_NICKNAME_ERROR(HttpStatus.BAD_REQUEST, 40051, "닉네임이 조건을 만족하지 않습니다."),
+    INVALID_BIRTH_DATE_ERROR(HttpStatus.BAD_REQUEST, 40053, "유효하지 않은 생년월일입니다."),
 
     /* 409 Conflict */
     DUPLICATED_NICKNAME_ERROR(HttpStatus.CONFLICT, 40901, "이미 사용 중인 닉네임입니다."),
diff --git a/src/main/java/com/acon/server/member/application/service/MemberService.java b/src/main/java/com/acon/server/member/application/service/MemberService.java
index d7a720f..333b136 100644
--- a/src/main/java/com/acon/server/member/application/service/MemberService.java
+++ b/src/main/java/com/acon/server/member/application/service/MemberService.java
@@ -42,6 +42,9 @@
 import com.acon.server.spot.infra.repository.SpotRepository;
 import java.time.LocalDate;
 import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+import java.time.format.DateTimeParseException;
+import java.time.format.ResolverStyle;
 import java.util.Collections;
 import java.util.List;
 import java.util.Optional;
@@ -315,6 +318,54 @@ private void validateNicknameDuplication(String nickname) {
         }
     }
 
+    @Transactional
+    public void updateProfile(String profileImage, String nickname, String birthDate
+    ) {
+        MemberEntity memberEntity = memberRepository.findByIdOrElseThrow(principalHandler.getUserIdFromPrincipal());
+        Member member = memberMapper.toDomain(memberEntity);
+
+        if (profileImage != null) {
+            if (profileImage.isEmpty()) {
+                String basicProfileImageUrl = s3Adapter.getBasicProfileImageUrl();
+                member.setProfileImage(basicProfileImageUrl);
+            } else {
+                String fileName = s3Adapter.getFileName(profileImage);
+                s3Adapter.validateImageExists(fileName);
+                String imageUrl = s3Adapter.getImageUrl(fileName);
+                member.setProfileImage(imageUrl);
+            }
+        }
+
+        if (nickname != null) {
+            validateNickname(nickname);
+            member.setNickname(nickname);
+        }
+
+        if (birthDate != null) {
+            LocalDate parsedBirthDate = validateAndParseBirthDate(birthDate);
+            member.setBirthDate(parsedBirthDate);
+        }
+
+        memberRepository.save(memberMapper.toEntity(member));
+    }
+
+    private LocalDate validateAndParseBirthDate(String birthDate) {
+        try {
+            LocalDate parsedDate = LocalDate.parse(
+                    birthDate,
+                    DateTimeFormatter.ofPattern("yyyy.MM.dd").withResolverStyle(ResolverStyle.STRICT)
+            );
+
+            if (parsedDate.isAfter(LocalDate.now())) {
+                throw new BusinessException(ErrorType.INVALID_BIRTH_DATE_ERROR);
+            }
+
+            return parsedDate;
+        } catch (DateTimeParseException e) {
+            throw new BusinessException(ErrorType.INVALID_BIRTH_DATE_ERROR);
+        }
+    }
+
     @Transactional
     public void logout(String refreshToken) {
         MemberEntity memberEntity = memberRepository.findByIdOrElseThrow(principalHandler.getUserIdFromPrincipal());