diff --git a/src/main/java/org/terning/terningserver/controller/ScrapController.java b/src/main/java/org/terning/terningserver/controller/ScrapController.java
index 8660801..17d1c93 100644
--- a/src/main/java/org/terning/terningserver/controller/ScrapController.java
+++ b/src/main/java/org/terning/terningserver/controller/ScrapController.java
@@ -29,20 +29,20 @@ public ResponseEntity<SuccessResponse> createScrap(
         return ResponseEntity.ok(SuccessResponse.of(SUCCESS_CREATE_SCRAP));
     }
 
-    @DeleteMapping("/scraps/{scrapId}")
+    @DeleteMapping("/scraps/{internshipAnnouncementId}")
     public ResponseEntity<SuccessResponse> deleteScrap(
             @AuthenticationPrincipal Long userId,
-            @PathVariable Long scrapId) {
-        scrapService.deleteScrap(scrapId, userId);
+            @PathVariable Long internshipAnnouncementId) {
+        scrapService.deleteScrap(internshipAnnouncementId, userId);
         return ResponseEntity.ok(SuccessResponse.of(SUCCESS_DELETE_SCRAP));
     }
 
-    @PatchMapping("/scraps/{scrapId}")
+    @PatchMapping("/scraps/{internshipAnnouncementId}")
     public ResponseEntity<SuccessResponse> updateScrapColor(
             @AuthenticationPrincipal Long userId,
-            @PathVariable Long scrapId,
+            @PathVariable Long internshipAnnouncementId,
             @RequestBody UpdateScrapRequestDto request) {
-        scrapService.updateScrapColor(scrapId, request, userId);
+        scrapService.updateScrapColor(internshipAnnouncementId, request, userId);
         return ResponseEntity.ok(SuccessResponse.of(SUCCESS_UPDATE_SCRAP));
     }
 }
diff --git a/src/main/java/org/terning/terningserver/controller/UserProfileController.java b/src/main/java/org/terning/terningserver/controller/UserProfileController.java
index e6b032a..57e2a29 100644
--- a/src/main/java/org/terning/terningserver/controller/UserProfileController.java
+++ b/src/main/java/org/terning/terningserver/controller/UserProfileController.java
@@ -1,18 +1,18 @@
 package org.terning.terningserver.controller;
 
 import lombok.RequiredArgsConstructor;
+import org.apache.coyote.Response;
 import org.springframework.http.ResponseEntity;
 import org.springframework.security.core.annotation.AuthenticationPrincipal;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.RequestHeader;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.bind.annotation.*;
 import org.terning.terningserver.controller.swagger.UserSwagger;
+import org.terning.terningserver.dto.user.request.ProfileUpdateRequestDto;
 import org.terning.terningserver.dto.user.response.ProfileResponseDto;
 import org.terning.terningserver.exception.dto.SuccessResponse;
 import org.terning.terningserver.service.UserService;
 
 import static org.terning.terningserver.exception.enums.SuccessMessage.SUCCESS_GET_PROFILE;
+import static org.terning.terningserver.exception.enums.SuccessMessage.SUCCESS_UPDATE_PROFILE;
 
 @RestController
 @RequiredArgsConstructor
@@ -28,4 +28,13 @@ public ResponseEntity<SuccessResponse<ProfileResponseDto>> getProfile(
         ProfileResponseDto profile = userService.getProfile(userId);
         return ResponseEntity.ok(SuccessResponse.of(SUCCESS_GET_PROFILE, profile));
     }
+
+    @PatchMapping("/mypage/profile")
+    public ResponseEntity<SuccessResponse> updateProfile(
+            @AuthenticationPrincipal Long userId,
+            @RequestBody ProfileUpdateRequestDto request
+    ){
+        userService.updateProfile(userId, request);
+        return ResponseEntity.ok(SuccessResponse.of(SUCCESS_UPDATE_PROFILE));
+    }
 }
diff --git a/src/main/java/org/terning/terningserver/controller/swagger/UserSwagger.java b/src/main/java/org/terning/terningserver/controller/swagger/UserSwagger.java
index 5575e80..0879bfd 100644
--- a/src/main/java/org/terning/terningserver/controller/swagger/UserSwagger.java
+++ b/src/main/java/org/terning/terningserver/controller/swagger/UserSwagger.java
@@ -3,6 +3,7 @@
 import io.swagger.v3.oas.annotations.Operation;
 import io.swagger.v3.oas.annotations.tags.Tag;
 import org.springframework.http.ResponseEntity;
+import org.terning.terningserver.dto.user.request.ProfileUpdateRequestDto;
 import org.terning.terningserver.dto.user.response.ProfileResponseDto;
 import org.terning.terningserver.exception.dto.SuccessResponse;
 
@@ -11,6 +12,13 @@ public interface UserSwagger {
 
     @Operation(summary = "마이페이지 > 프로필 정보 불러오기", description = "마이페이지에서 프로필 정보를 불러오는 API")
     ResponseEntity<SuccessResponse<ProfileResponseDto>> getProfile(
-        Long userId
+            Long userId
     );
+
+    @Operation(summary = "마이페이지 > 프로필 정보 수정하기", description = "마이페이지에서 프로필 정보를 수정하는 API")
+    ResponseEntity<SuccessResponse> updateProfile(
+            Long userId,
+            ProfileUpdateRequestDto request
+    );
+
 }
diff --git a/src/main/java/org/terning/terningserver/domain/User.java b/src/main/java/org/terning/terningserver/domain/User.java
index 4a08c32..4164236 100644
--- a/src/main/java/org/terning/terningserver/domain/User.java
+++ b/src/main/java/org/terning/terningserver/domain/User.java
@@ -4,6 +4,7 @@
 import lombok.*;
 import org.terning.terningserver.domain.common.BaseTimeEntity;
 import org.terning.terningserver.domain.enums.AuthType;
+import org.terning.terningserver.domain.enums.ProfileImage;
 import org.terning.terningserver.domain.enums.State;
 import org.terning.terningserver.exception.CustomException;
 
@@ -37,8 +38,9 @@ public class User extends BaseTimeEntity {
     // TODO: 특수문자, 첫글자 , 12자리 이내
     @Column(length = 12)
     private String name; // 사용자 이름
-    
-    private Integer profileImage; //유저 아이콘
+
+    @Enumerated(STRING)
+    private ProfileImage profileImage; //유저 아이콘
 
     @Enumerated(STRING)
     private AuthType authType; // 인증 유형 (예: 카카오, 애플)
@@ -68,4 +70,10 @@ public void resetRefreshToken() {
     public void assignFilter(Filter filter) {
         this.filter = filter;
     }
+
+    //프로필 수정 메서드
+    public void updateProfile(String name, ProfileImage profileImage){
+        this.name = name;
+        this.profileImage = profileImage;
+    }
 }
diff --git a/src/main/java/org/terning/terningserver/domain/enums/Color.java b/src/main/java/org/terning/terningserver/domain/enums/Color.java
index 2545ac4..5925c80 100644
--- a/src/main/java/org/terning/terningserver/domain/enums/Color.java
+++ b/src/main/java/org/terning/terningserver/domain/enums/Color.java
@@ -8,18 +8,18 @@
 @Getter
 public enum Color {
 
-    RED(0, "ED4E54"),
-    ORANGE1(1, "EE7647"),
-    ORANGE2(2, "F3A649"),
-    YELLOW(3, "F5E660"),
-    GREEN1(4, "C4E953"),
-    GREEN2(5, "84D558"),
-    BLUE1(6, "45D0CC"),
-    BLUE2(7, "4AA9F2"),
-    PURPLE(8, "9B64E2"),
-    PINK(9, "F260AC");
+    RED("red", "ED4E54"),
+    ORANGE("orange", "F3A649"),
+    LIGHT_GREEN("lightgreen", "C4E953"),
+    MINT("mint", "45D0CC"),
+    PURPLE("purple", "9B64E2"),
+    CORAL("coral", "EE7647"),
+    YELLOW("yellow", "F5E660"),
+    GREEN("green", "84D558"),
+    BLUE("blue", "4AA9F2"),
+    PINK("pink", "F260AC");
 
-    private final int key;
+    private final String name;
     private final String value;
 
     public String getColorValue() {
diff --git a/src/main/java/org/terning/terningserver/domain/enums/ProfileImage.java b/src/main/java/org/terning/terningserver/domain/enums/ProfileImage.java
new file mode 100644
index 0000000..86acb47
--- /dev/null
+++ b/src/main/java/org/terning/terningserver/domain/enums/ProfileImage.java
@@ -0,0 +1,25 @@
+package org.terning.terningserver.domain.enums;
+
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+
+@RequiredArgsConstructor
+@Getter
+public enum ProfileImage {
+    BASIC("basic"),
+    LUCKY("lucky"),
+    SMART("smart"),
+    GLASS("glass"),
+    CALENDAR("calendar");
+
+    private final String value;
+
+    public static ProfileImage fromValue(String value){
+        for(ProfileImage image : values()){
+            if(image.value.equalsIgnoreCase(value)){
+                return image;
+            }
+        }
+        throw new IllegalArgumentException("Invalid profile image: " + value);
+    }
+}
diff --git a/src/main/java/org/terning/terningserver/dto/auth/request/SignUpRequestDto.java b/src/main/java/org/terning/terningserver/dto/auth/request/SignUpRequestDto.java
index b010b96..97ba398 100644
--- a/src/main/java/org/terning/terningserver/dto/auth/request/SignUpRequestDto.java
+++ b/src/main/java/org/terning/terningserver/dto/auth/request/SignUpRequestDto.java
@@ -9,11 +9,11 @@
 @Builder(access = PRIVATE)
 public record SignUpRequestDto(
         @NonNull String name,
-        int profileImage,
+        String profileImage,
         @NonNull AuthType authType
 ) {
 
-        public static SignUpRequestDto of(String name, int profileImage, AuthType authType){
+        public static SignUpRequestDto of(String name, String profileImage, AuthType authType){
             return SignUpRequestDto.builder()
                     .name(name)
                     .profileImage(profileImage)
diff --git a/src/main/java/org/terning/terningserver/dto/auth/request/SignUpWithAuthIdRequestDto.java b/src/main/java/org/terning/terningserver/dto/auth/request/SignUpWithAuthIdRequestDto.java
index 98674ce..a9ad50a 100644
--- a/src/main/java/org/terning/terningserver/dto/auth/request/SignUpWithAuthIdRequestDto.java
+++ b/src/main/java/org/terning/terningserver/dto/auth/request/SignUpWithAuthIdRequestDto.java
@@ -10,10 +10,10 @@
 public record SignUpWithAuthIdRequestDto(
         @NonNull String authId,
         @NonNull String name,
-        int profileImage,
+        String profileImage,
         @NonNull AuthType authType
 ) {
-    public static SignUpWithAuthIdRequestDto of(String authId, String name, int profileImage, AuthType authType){
+    public static SignUpWithAuthIdRequestDto of(String authId, String name, String profileImage, AuthType authType){
         return SignUpWithAuthIdRequestDto.builder()
                 .authId(authId)
                 .name(name)
diff --git a/src/main/java/org/terning/terningserver/dto/auth/request/TokenGetRequestDto.java b/src/main/java/org/terning/terningserver/dto/auth/request/TokenGetRequestDto.java
deleted file mode 100644
index 7bd4eef..0000000
--- a/src/main/java/org/terning/terningserver/dto/auth/request/TokenGetRequestDto.java
+++ /dev/null
@@ -1,18 +0,0 @@
-package org.terning.terningserver.dto.auth.request;
-
-import lombok.Builder;
-import lombok.NonNull;
-
-import static lombok.AccessLevel.*;
-
-@Builder(access = PRIVATE)
-public record TokenGetRequestDto(
-        @NonNull String refreshToken
-) {
-
-    public static TokenGetRequestDto of(String refreshToken) {
-        return TokenGetRequestDto.builder()
-                .refreshToken(refreshToken)
-                .build();
-    }
-}
diff --git a/src/main/java/org/terning/terningserver/dto/scrap/request/CreateScrapRequestDto.java b/src/main/java/org/terning/terningserver/dto/scrap/request/CreateScrapRequestDto.java
index 37fb183..374089d 100644
--- a/src/main/java/org/terning/terningserver/dto/scrap/request/CreateScrapRequestDto.java
+++ b/src/main/java/org/terning/terningserver/dto/scrap/request/CreateScrapRequestDto.java
@@ -1,7 +1,7 @@
 package org.terning.terningserver.dto.scrap.request;
 
 public record CreateScrapRequestDto(
-        int color
+        String color
 ) {
 
 }
diff --git a/src/main/java/org/terning/terningserver/dto/scrap/request/UpdateScrapRequestDto.java b/src/main/java/org/terning/terningserver/dto/scrap/request/UpdateScrapRequestDto.java
index 9843b8e..51851df 100644
--- a/src/main/java/org/terning/terningserver/dto/scrap/request/UpdateScrapRequestDto.java
+++ b/src/main/java/org/terning/terningserver/dto/scrap/request/UpdateScrapRequestDto.java
@@ -1,6 +1,6 @@
 package org.terning.terningserver.dto.scrap.request;
 
 public record UpdateScrapRequestDto(
-        int color
+        String color
 ) {
 }
diff --git a/src/main/java/org/terning/terningserver/dto/user/request/Empty.txt b/src/main/java/org/terning/terningserver/dto/user/request/Empty.txt
deleted file mode 100644
index e69de29..0000000
diff --git a/src/main/java/org/terning/terningserver/dto/user/request/ProfileUpdateRequestDto.java b/src/main/java/org/terning/terningserver/dto/user/request/ProfileUpdateRequestDto.java
new file mode 100644
index 0000000..9ba7530
--- /dev/null
+++ b/src/main/java/org/terning/terningserver/dto/user/request/ProfileUpdateRequestDto.java
@@ -0,0 +1,19 @@
+package org.terning.terningserver.dto.user.request;
+
+import lombok.Builder;
+import lombok.NonNull;
+
+import static lombok.AccessLevel.PRIVATE;
+
+@Builder(access = PRIVATE)
+public record ProfileUpdateRequestDto(
+        @NonNull String name,
+        String profileImage
+) {
+    public static ProfileUpdateRequestDto of(String name, String profileImage){
+        return ProfileUpdateRequestDto.builder()
+                .name(name)
+                .profileImage(profileImage)
+                .build();
+    }
+}
diff --git a/src/main/java/org/terning/terningserver/dto/user/response/ProfileResponseDto.java b/src/main/java/org/terning/terningserver/dto/user/response/ProfileResponseDto.java
index 38de73c..fd1e62b 100644
--- a/src/main/java/org/terning/terningserver/dto/user/response/ProfileResponseDto.java
+++ b/src/main/java/org/terning/terningserver/dto/user/response/ProfileResponseDto.java
@@ -6,11 +6,13 @@
 @Builder
 public record ProfileResponseDto(
         String name,
+        String profileImage,
         String authType
 ) {
     public static ProfileResponseDto of(final User user){
         return ProfileResponseDto.builder()
                 .name(user.getName())
+                .profileImage(user.getProfileImage().getValue()) // Enum to String
                 .authType(user.getAuthType().name().toUpperCase())
                 .build();
     }
diff --git a/src/main/java/org/terning/terningserver/exception/enums/ErrorMessage.java b/src/main/java/org/terning/terningserver/exception/enums/ErrorMessage.java
index 8d43209..24134d0 100644
--- a/src/main/java/org/terning/terningserver/exception/enums/ErrorMessage.java
+++ b/src/main/java/org/terning/terningserver/exception/enums/ErrorMessage.java
@@ -23,7 +23,7 @@ public enum ErrorMessage {
     FAILED_SIGN_UP_USER_FILTER_CREATION(404, "사용자 필터 생성에 실패하였습니다"),
     FAILED_SIGN_UP_USER_FILTER_ASSIGNMENT(404, "사용자 필터 연결에 실패하였습니다"),
 
-    //스크랩
+    // 스크랩
     EXISTS_SCRAP_ALREADY(400, "이미 스크랩했습니다."),
 
     // 로그 아웃
@@ -32,12 +32,15 @@ public enum ErrorMessage {
 
     // 계정 탈퇴
     FAILED_WITHDRAW(404, "계정 탈퇴에 실패하였습니다"),
+
+    // 마이페이지
+    INVALID_PROFILE_IMAGE(404, "유효하지 않은 프로필 이미지 입니다."),
     
-    //404(NotFound)
+    // 404(NotFound)
     NOT_FOUND_INTERN_CATEGORY(404, "해당 인턴 공고는 존재하지 않습니다"),
     NOT_FOUND_INTERN_EXCEPTION(404, "해당 인턴 공고는 존재하지 않습니다"),
     NOT_FOUND_USER_EXCEPTION(404, "해당 유저가 존재하지 않습니다"),
-    NOT_FOUND_SCRAP(404, "해당 스크랩 id에 대한 스크랩 정보가 존재하지 않습니다"),
+    NOT_FOUND_SCRAP(404, "스크랩 정보가 존재하지 않습니다"),
     FORBIDDEN_DELETE_SCRAP(403, "해당 유저가 스크랩하지 않았으므로 스크랩 취소가 불가합니다");
 
     private final int status;
diff --git a/src/main/java/org/terning/terningserver/exception/enums/SuccessMessage.java b/src/main/java/org/terning/terningserver/exception/enums/SuccessMessage.java
index 9795043..4f97534 100644
--- a/src/main/java/org/terning/terningserver/exception/enums/SuccessMessage.java
+++ b/src/main/java/org/terning/terningserver/exception/enums/SuccessMessage.java
@@ -52,8 +52,8 @@ public enum SuccessMessage {
     SUCCESS_UPDATE_USER_FILTER(200, "필터링 재설정에 성공했습니다"),
 
     // My page (마이페이지 화면)
-    SUCCESS_GET_PROFILE(200, "마이페이지 > 프로필 정보 불러오기를 성공했습니다");
-
+    SUCCESS_GET_PROFILE(200, "마이페이지 > 프로필 정보 불러오기를 성공했습니다"),
+    SUCCESS_UPDATE_PROFILE(200, "프로필 수정에 성공했습니다");
 
     private final int status;
     private final String message;
diff --git a/src/main/java/org/terning/terningserver/repository/scrap/ScrapRepository.java b/src/main/java/org/terning/terningserver/repository/scrap/ScrapRepository.java
index 16dac45..542f0fd 100644
--- a/src/main/java/org/terning/terningserver/repository/scrap/ScrapRepository.java
+++ b/src/main/java/org/terning/terningserver/repository/scrap/ScrapRepository.java
@@ -14,6 +14,8 @@ public interface ScrapRepository extends JpaRepository<Scrap, Long>, ScrapReposi
 
 //    List<Scrap> findByUserIdAndInternshipAnnouncement_Deadline(Long userId, LocalDate deadline);
 
+    void deleteByInternshipAnnouncementIdAndUserId(Long internshipId, Long userId);
+
     List<Scrap> findByUserIdAndInternshipAnnouncement_DeadlineBetween(Long userId, LocalDate start, LocalDate end);
 
 }
diff --git a/src/main/java/org/terning/terningserver/service/AuthServiceImpl.java b/src/main/java/org/terning/terningserver/service/AuthServiceImpl.java
index 5dc96c3..3794be4 100644
--- a/src/main/java/org/terning/terningserver/service/AuthServiceImpl.java
+++ b/src/main/java/org/terning/terningserver/service/AuthServiceImpl.java
@@ -11,6 +11,7 @@
 import org.terning.terningserver.domain.Token;
 import org.terning.terningserver.domain.User;
 import org.terning.terningserver.domain.enums.Grade;
+import org.terning.terningserver.domain.enums.ProfileImage;
 import org.terning.terningserver.domain.enums.WorkingPeriod;
 import org.terning.terningserver.dto.auth.request.SignInRequestDto;
 import org.terning.terningserver.dto.auth.request.SignUpFilterRequestDto;
@@ -47,22 +48,10 @@ public class AuthServiceImpl implements AuthService {
     @Transactional
     public SignInResponseDto signIn(String authAccessToken, SignInRequestDto request) {
         String authId = getAuthId(request.authType(), authAccessToken);
-        Optional<User> userOptional = userRepository.findByAuthIdAndAuthType(authId, request.authType());
-
-        if (userOptional.isPresent()) {
-            User user = userOptional.get();
-            Token token = getToken(user);
-            user.updateRefreshToken(token.getRefreshToken());
-            return SignInResponseDto.of(
-                    token,
-                    authId,
-                    request.authType(),
-                    user.getId()
-            );
-        }
-        else {
-            return SignInResponseDto.of(null, authId, request.authType(), null);
-        }
+
+        return findUserByAuthIdAndType(authId, request.authType())
+                .map(user -> createSignInResponseForExistingUser(user, authId, request.authType()))
+                .orElseGet(() -> createSignInResponseForNonExistingUser(authId, request.authType()));
     }
 
     @Transactional
@@ -113,6 +102,25 @@ public void connectFilterToUser(long userId, long filterId) {
         userRepository.save(user);
     }
 
+    private Optional<User> findUserByAuthIdAndType(String authId, AuthType authType) {
+        return userRepository.findByAuthIdAndAuthType(authId, authType);
+    }
+
+    private SignInResponseDto createSignInResponseForExistingUser(User user, String authId, AuthType authType) {
+        Token token = getToken(user);
+        user.updateRefreshToken(token.getRefreshToken());
+        return SignInResponseDto.of(
+                token,
+                authId,
+                authType,
+                user.getId()
+        );
+    }
+
+    private SignInResponseDto createSignInResponseForNonExistingUser(String authId, AuthType authType) {
+        return SignInResponseDto.of(null, authId, authType, null);
+    }
+
     private String getAuthId(AuthType authType, String authAccessToken) {
         return switch (authType) {
             case APPLE -> appleService.getAppleData(authAccessToken);
@@ -142,11 +150,15 @@ private SignUpWithAuthIdRequestDto createSignUpRequestDto(String authId, SignUpR
     }
 
     private User createUser(SignUpWithAuthIdRequestDto requestDto) {
+        //프로필 이미지가 null일 경우 기본값 "basic"으로 설정
+        ProfileImage profileImage = requestDto.profileImage() != null
+                ? ProfileImage.fromValue(requestDto.profileImage()) : ProfileImage.BASIC;
+
         User user = User.builder()
                 .authId(requestDto.authId())
                 .name(requestDto.name())
                 .authType(requestDto.authType())
-                .profileImage(requestDto.profileImage())
+                .profileImage(profileImage) //String to Enum
                 .build();
         return userRepository.save(user);
     }
diff --git a/src/main/java/org/terning/terningserver/service/ScrapServiceImpl.java b/src/main/java/org/terning/terningserver/service/ScrapServiceImpl.java
index 9a08170..54516a5 100644
--- a/src/main/java/org/terning/terningserver/service/ScrapServiceImpl.java
+++ b/src/main/java/org/terning/terningserver/service/ScrapServiceImpl.java
@@ -14,6 +14,7 @@
 import org.terning.terningserver.dto.calendar.response.MonthlyListResponseDto;
 import org.terning.terningserver.dto.user.response.UpcomingScrapResponseDto;
 import org.terning.terningserver.exception.CustomException;
+import org.terning.terningserver.exception.enums.ErrorMessage;
 import org.terning.terningserver.repository.internship_announcement.InternshipRepository;
 import org.terning.terningserver.repository.scrap.ScrapRepository;
 import org.terning.terningserver.repository.user.UserRepository;
@@ -135,17 +136,17 @@ public void createScrap(Long internshipAnnouncementId, CreateScrapRequestDto req
 
     @Override
     @Transactional
-    public void deleteScrap(Long scrapId, Long userId) {
-        Scrap scrap = findScrap(scrapId);
+    public void deleteScrap(Long internshipAnnouncementId, Long userId) {
+        Scrap scrap = findScrap(internshipAnnouncementId, userId);
         scrap.getInternshipAnnouncement().updateScrapCount(-1);
         verifyScrapOwner(scrap, userId);
-        scrapRepository.deleteById(scrapId);
+        scrapRepository.deleteByInternshipAnnouncementIdAndUserId(internshipAnnouncementId, userId);
     }
 
     @Override
     @Transactional
-    public void updateScrapColor(Long scrapId, UpdateScrapRequestDto request, Long userId) {
-        Scrap scrap = findScrap(scrapId);
+    public void updateScrapColor(Long internshipAnnouncementId, UpdateScrapRequestDto request, Long userId) {
+        Scrap scrap = findScrap(internshipAnnouncementId, userId);
         verifyScrapOwner(scrap, userId);
         scrap.updateColor(findColor(request.color()));
     }
@@ -157,9 +158,9 @@ private void verifyScrapOwner(Scrap scrap, Long userId) {
         }
     }
 
-    private Color findColor(int color) {
+    private Color findColor(String color) {
         return Arrays.stream(Color.values())
-                .filter(c-> c.getKey() == color)
+                .filter(c-> c.getName().equals(color))
                 .findAny().get();
     }
 
@@ -173,8 +174,8 @@ private User findUser(Long userId) {
                 .orElseThrow(() -> new CustomException(NOT_FOUND_USER_EXCEPTION));
     }
 
-    private Scrap findScrap(Long scrapId) {
-        return scrapRepository.findById(scrapId)
+    private Scrap findScrap(Long internshipAnnouncementId, Long userId) {
+        return scrapRepository.findByInternshipAnnouncementIdAndUserId(internshipAnnouncementId, userId)
                 .orElseThrow(() -> new CustomException(NOT_FOUND_SCRAP));
     }
 }
diff --git a/src/main/java/org/terning/terningserver/service/UserService.java b/src/main/java/org/terning/terningserver/service/UserService.java
index a894366..283744b 100644
--- a/src/main/java/org/terning/terningserver/service/UserService.java
+++ b/src/main/java/org/terning/terningserver/service/UserService.java
@@ -1,9 +1,12 @@
 package org.terning.terningserver.service;
 
 import org.terning.terningserver.domain.User;
+import org.terning.terningserver.dto.user.request.ProfileUpdateRequestDto;
 import org.terning.terningserver.dto.user.response.ProfileResponseDto;
 
 public interface UserService {
     void deleteUser(User user);
     ProfileResponseDto getProfile(Long userId);
+
+    void updateProfile(Long userId, ProfileUpdateRequestDto request);
 }
diff --git a/src/main/java/org/terning/terningserver/service/UserServiceImpl.java b/src/main/java/org/terning/terningserver/service/UserServiceImpl.java
index 8e9a84e..a9b4980 100644
--- a/src/main/java/org/terning/terningserver/service/UserServiceImpl.java
+++ b/src/main/java/org/terning/terningserver/service/UserServiceImpl.java
@@ -4,6 +4,8 @@
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 import org.terning.terningserver.domain.User;
+import org.terning.terningserver.domain.enums.ProfileImage;
+import org.terning.terningserver.dto.user.request.ProfileUpdateRequestDto;
 import org.terning.terningserver.exception.CustomException;
 import org.terning.terningserver.exception.enums.ErrorMessage;
 import org.terning.terningserver.repository.user.UserRepository;
@@ -32,6 +34,27 @@ public ProfileResponseDto getProfile(Long userId){
         User user = userRepository.findById(userId).orElseThrow(
                 () -> new CustomException(ErrorMessage.NOT_FOUND_USER_EXCEPTION)
         );
+
         return ProfileResponseDto.of(user);
     }
+
+    @Override
+    @Transactional
+    public void updateProfile(Long userId, ProfileUpdateRequestDto request){
+        User user = userRepository.findById(userId)
+                .orElseThrow(() -> new CustomException(ErrorMessage.NOT_FOUND_USER_EXCEPTION));
+
+        try{
+            // 프로필 이미지가 유효하지 않으면 IllegalArgumentException을 던짐
+            ProfileImage profileImage = ProfileImage.fromValue(request.profileImage());
+
+            //프로필 업데이트
+            user.updateProfile(request.name(), ProfileImage.fromValue(request.profileImage()));
+
+            userRepository.save(user);
+        } catch (IllegalArgumentException e){
+            // 잘못된 프로필 이미지 값이 오면 CustomException 발생
+            throw new CustomException(ErrorMessage.INVALID_PROFILE_IMAGE);
+        }
+    }
 }