diff --git a/src/main/java/org/gachon/checkmate/domain/post/dto/response/PostDetailResponseDto.java b/src/main/java/org/gachon/checkmate/domain/post/dto/response/PostDetailResponseDto.java
index e61f37c..0569b69 100644
--- a/src/main/java/org/gachon/checkmate/domain/post/dto/response/PostDetailResponseDto.java
+++ b/src/main/java/org/gachon/checkmate/domain/post/dto/response/PostDetailResponseDto.java
@@ -7,6 +7,8 @@
 @Builder
 public record PostDetailResponseDto(
         Long memberId,
+        String title,
+        String content,
         String name,
         String major,
         String profile,
@@ -14,12 +16,16 @@ public record PostDetailResponseDto(
         String mbti,
         String roomType,
         String dormitoryType,
+        String importantKeyType,
+        String similarityKeyType,
         boolean isScrap,
         CheckListResponseDto checkList
 ) {
     public static PostDetailResponseDto of(PostDetailDto postDetailDto, CheckListResponseDto checkList, boolean isScrap) {
         return PostDetailResponseDto.builder()
                 .memberId(postDetailDto.memberId())
+                .title(postDetailDto.title())
+                .content(postDetailDto.content())
                 .name(postDetailDto.name())
                 .major(postDetailDto.major())
                 .profile(postDetailDto.profile())
@@ -27,6 +33,8 @@ public static PostDetailResponseDto of(PostDetailDto postDetailDto, CheckListRes
                 .roomType(postDetailDto.roomType().getDesc())
                 .dormitoryType(postDetailDto.dormitoryType().getDesc())
                 .mbti(postDetailDto.mbti().getDesc())
+                .importantKeyType(postDetailDto.importantKeyType().getDesc())
+                .similarityKeyType(postDetailDto.similarityKeyType().getDesc())
                 .isScrap(isScrap)
                 .checkList(checkList)
                 .build();
diff --git a/src/main/java/org/gachon/checkmate/domain/post/dto/support/PostDetailDto.java b/src/main/java/org/gachon/checkmate/domain/post/dto/support/PostDetailDto.java
index 1603a20..2acec4b 100644
--- a/src/main/java/org/gachon/checkmate/domain/post/dto/support/PostDetailDto.java
+++ b/src/main/java/org/gachon/checkmate/domain/post/dto/support/PostDetailDto.java
@@ -6,10 +6,14 @@
 import org.gachon.checkmate.domain.member.entity.MbtiType;
 import org.gachon.checkmate.domain.member.entity.ProfileImageType;
 import org.gachon.checkmate.domain.post.entity.DormitoryType;
+import org.gachon.checkmate.domain.post.entity.ImportantKeyType;
 import org.gachon.checkmate.domain.post.entity.RoomType;
+import org.gachon.checkmate.domain.post.entity.SimilarityKeyType;
 
 public record PostDetailDto(
         Long memberId,
+        String title,
+        String content,
         String major,
         MbtiType mbti,
         GenderType gender,
@@ -17,11 +21,17 @@ public record PostDetailDto(
         DormitoryType dormitoryType,
         String name,
         String profile,
+        ImportantKeyType importantKeyType,
+        SimilarityKeyType similarityKeyType,
         PostCheckList postCheckList
 ) {
     @QueryProjection
-    public PostDetailDto(Long memberId, String major, MbtiType mbti, GenderType gender, RoomType roomType, DormitoryType dormitoryType, String name, String profile, PostCheckList postCheckList) {
+    public PostDetailDto(Long memberId, String title, String content, String major, MbtiType mbti,
+                         GenderType gender, RoomType roomType, DormitoryType dormitoryType, String name,
+                         String profile, ImportantKeyType importantKeyType, SimilarityKeyType similarityKeyType, PostCheckList postCheckList) {
         this.memberId = memberId;
+        this.title = title;
+        this.content = content;
         this.major = major;
         this.mbti = mbti;
         this.gender = gender;
@@ -29,6 +39,8 @@ public PostDetailDto(Long memberId, String major, MbtiType mbti, GenderType gend
         this.dormitoryType = dormitoryType;
         this.name = name;
         this.profile = profile;
+        this.importantKeyType = importantKeyType;
+        this.similarityKeyType = similarityKeyType;
         this.postCheckList = postCheckList;
     }
 }
diff --git a/src/main/java/org/gachon/checkmate/domain/post/repository/PostCustomRepositoryImpl.java b/src/main/java/org/gachon/checkmate/domain/post/repository/PostCustomRepositoryImpl.java
index 14bfdf7..7d6f88f 100644
--- a/src/main/java/org/gachon/checkmate/domain/post/repository/PostCustomRepositoryImpl.java
+++ b/src/main/java/org/gachon/checkmate/domain/post/repository/PostCustomRepositoryImpl.java
@@ -30,6 +30,8 @@ public Optional<PostDetailDto> findPostDetail(Long postId) {
         return Optional.ofNullable(queryFactory
                 .select(new QPostDetailDto(
                         user.id,
+                        post.title,
+                        post.content,
                         user.major,
                         user.mbtiType,
                         user.gender,
@@ -37,6 +39,8 @@ public Optional<PostDetailDto> findPostDetail(Long postId) {
                         post.dormitoryType,
                         user.name,
                         user.profile,
+                        post.importantKeyType,
+                        post.similarityKeyType,
                         post.postCheckList
                 ))
                 .from(post)
diff --git a/src/main/java/org/gachon/checkmate/domain/scrap/controller/ScrapController.java b/src/main/java/org/gachon/checkmate/domain/scrap/controller/ScrapController.java
index b317418..b83d970 100644
--- a/src/main/java/org/gachon/checkmate/domain/scrap/controller/ScrapController.java
+++ b/src/main/java/org/gachon/checkmate/domain/scrap/controller/ScrapController.java
@@ -32,8 +32,8 @@ public ResponseEntity<SuccessResponse<?>> createScrapPost(@UserId final Long use
 
     @DeleteMapping("/{id}")
     public ResponseEntity<SuccessResponse<?>> deleteScrapPost(@UserId final Long userId,
-                                                              @PathVariable("id") final Long scrapId) {
-        scrapService.deleteScrapPost(userId, scrapId);
+                                                              @PathVariable("id") final Long postId) {
+        scrapService.deleteScrapPost(userId, postId);
         return SuccessResponse.ok(null);
     }
 }
diff --git a/src/main/java/org/gachon/checkmate/domain/scrap/repository/ScrapRepository.java b/src/main/java/org/gachon/checkmate/domain/scrap/repository/ScrapRepository.java
index f413ab9..e50670b 100644
--- a/src/main/java/org/gachon/checkmate/domain/scrap/repository/ScrapRepository.java
+++ b/src/main/java/org/gachon/checkmate/domain/scrap/repository/ScrapRepository.java
@@ -4,6 +4,6 @@
 import org.springframework.data.jpa.repository.JpaRepository;
 
 public interface ScrapRepository extends JpaRepository<Scrap, Long>, ScrapCustomRepository {
-    void deleteByIdAndUserId(Long scrapId, Long userId);
+    void deleteByPostIdAndUserId(Long postId, Long userId);
     boolean existsByPostIdAndUserId(Long postId, Long userId);
 }
diff --git a/src/main/java/org/gachon/checkmate/domain/scrap/service/ScrapService.java b/src/main/java/org/gachon/checkmate/domain/scrap/service/ScrapService.java
index b520a9c..fbaa8e8 100644
--- a/src/main/java/org/gachon/checkmate/domain/scrap/service/ScrapService.java
+++ b/src/main/java/org/gachon/checkmate/domain/scrap/service/ScrapService.java
@@ -14,7 +14,9 @@
 import org.gachon.checkmate.domain.scrap.dto.support.ScrapSearchCondition;
 import org.gachon.checkmate.domain.scrap.entity.Scrap;
 import org.gachon.checkmate.domain.scrap.repository.ScrapRepository;
+import org.gachon.checkmate.global.error.exception.ConflictException;
 import org.gachon.checkmate.global.error.exception.EntityNotFoundException;
+import org.gachon.checkmate.global.error.exception.InvalidValueException;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
 import org.springframework.stereotype.Service;
@@ -48,11 +50,13 @@ public PostSearchResponseDto getScrapPosts(Long userId, Pageable pageable) {
     public void creatScrapPost(Long userId, ScrapRequestDto scrapRequestDto) {
         User user = findUserOrThrow(userId);
         Post post = findPostOrThrow(scrapRequestDto.postId());
+        validateDuplicateScrap(post.getId(), user.getId());
         createScrapAndSave(user, post);
     }
 
-    public void deleteScrapPost(Long userId, Long scrapId) {
-        scrapRepository.deleteByIdAndUserId(scrapId, userId);
+    public void deleteScrapPost(Long userId, Long postId) {
+        validateExistScrap(postId, userId);
+        scrapRepository.deleteByPostIdAndUserId(postId, userId);
     }
 
     private List<PostSearchElementResponseDto> createPostSearchResponseDto(Page<PostSearchDto> postSearchDtoList, CheckList checkList) {
@@ -74,6 +78,20 @@ private void createScrapAndSave(User user, Post post) {
         scrapRepository.save(scrap);
     }
 
+    private void validateDuplicateScrap(Long postId, Long userId) {
+        if(existPostInScrap(postId, userId))
+            throw new ConflictException(DUPLICATE_SCRAP);
+    }
+
+    private void validateExistScrap(Long postId, Long userId) {
+        if(!existPostInScrap(postId, userId))
+            throw new InvalidValueException(INVALID_DELETE_SCRAP);
+    }
+
+    private boolean existPostInScrap(Long postId, Long userId) {
+        return scrapRepository.existsByPostIdAndUserId(postId, userId);
+    }
+
     private CheckList getCheckList(Long userId) {
         return checkListRepository.findByUserId(userId)
                 .orElseThrow(() -> new EntityNotFoundException(CHECK_LIST_NOT_FOUND));
diff --git a/src/main/java/org/gachon/checkmate/global/error/ErrorCode.java b/src/main/java/org/gachon/checkmate/global/error/ErrorCode.java
index e41b40b..035e5d9 100644
--- a/src/main/java/org/gachon/checkmate/global/error/ErrorCode.java
+++ b/src/main/java/org/gachon/checkmate/global/error/ErrorCode.java
@@ -17,6 +17,7 @@ public enum ErrorCode {
     INVALID_PASSWORD(HttpStatus.BAD_REQUEST, "비밀번호는 8~20자 대소문자 영문, 숫자, 특수문자의 조합이어야 합니다."),
     INVALID_POST_TITLE(HttpStatus.BAD_REQUEST, "이미 존재하는 게시물입니다."),
     INVALID_POST_DATE(HttpStatus.BAD_REQUEST, "마감시간이 지난 게시물입니다."),
+    INVALID_DELETE_SCRAP(HttpStatus.BAD_REQUEST, "등록되지 않은 스크랩입니다."),
 
     /**
      * 401 Unauthorized
@@ -59,6 +60,7 @@ public enum ErrorCode {
      */
     CONFLICT(HttpStatus.CONFLICT, "이미 존재하는 리소스입니다."),
     DUPLICATE_EMAIL(HttpStatus.CONFLICT, "이미 가입된 이메일입니다."),
+    DUPLICATE_SCRAP(HttpStatus.CONFLICT, "이미 등록된 스크랩입니다."),
     DUPLICATE_CHECK_LIST(HttpStatus.CONFLICT, "체크리스트가 이미 존재합니다."),
     DUPLICATE_POST_REPORT(HttpStatus.CONFLICT, "이전에 신고했던 게시물입니다."),
     DUPLICATE_CHATROOM_REPORT(HttpStatus.CONFLICT, "이전에 신고했던 채팅방입니다."),