diff --git a/src/main/java/com/potatocake/everymoment/dto/response/FriendDiaryResponse.java b/src/main/java/com/potatocake/everymoment/dto/response/FriendDiaryResponse.java
index 47ea8da..d533783 100644
--- a/src/main/java/com/potatocake/everymoment/dto/response/FriendDiaryResponse.java
+++ b/src/main/java/com/potatocake/everymoment/dto/response/FriendDiaryResponse.java
@@ -18,5 +18,6 @@ public class FriendDiaryResponse {
     private String emoji;
     private String content;
     private LikeCountResponse likeCount;
+    private boolean isLiked;
     private LocalDateTime createAt;
 }
diff --git a/src/main/java/com/potatocake/everymoment/dto/response/MyDiaryResponse.java b/src/main/java/com/potatocake/everymoment/dto/response/MyDiaryResponse.java
index a92bc41..c8c8110 100644
--- a/src/main/java/com/potatocake/everymoment/dto/response/MyDiaryResponse.java
+++ b/src/main/java/com/potatocake/everymoment/dto/response/MyDiaryResponse.java
@@ -15,5 +15,6 @@ public class MyDiaryResponse {
     private boolean isBookmark;
     private String emoji;
     private String content;
+    private boolean isLiked;
     private LocalDateTime createAt;
 }
diff --git a/src/main/java/com/potatocake/everymoment/repository/LikeRepository.java b/src/main/java/com/potatocake/everymoment/repository/LikeRepository.java
index dc383b1..367cd00 100644
--- a/src/main/java/com/potatocake/everymoment/repository/LikeRepository.java
+++ b/src/main/java/com/potatocake/everymoment/repository/LikeRepository.java
@@ -11,4 +11,6 @@ public interface LikeRepository extends JpaRepository<Like, Long> {
 
     Long countByDiary(Diary diary);
 
+    boolean existsByMemberIdAndDiaryId(Long memberId, Long diaryId);
+
 }
diff --git a/src/main/java/com/potatocake/everymoment/service/DiaryService.java b/src/main/java/com/potatocake/everymoment/service/DiaryService.java
index 12d070c..3378c30 100644
--- a/src/main/java/com/potatocake/everymoment/service/DiaryService.java
+++ b/src/main/java/com/potatocake/everymoment/service/DiaryService.java
@@ -22,6 +22,7 @@
 import com.potatocake.everymoment.repository.DiaryCategoryRepository;
 import com.potatocake.everymoment.repository.DiaryRepository;
 import com.potatocake.everymoment.repository.FileRepository;
+import com.potatocake.everymoment.repository.LikeRepository;
 import com.potatocake.everymoment.repository.MemberRepository;
 import java.time.LocalDate;
 import java.util.List;
@@ -48,6 +49,7 @@ public class DiaryService {
     private final MemberRepository memberRepository;
     private final CategoryRepository categoryRepository;
     private final FileRepository fileRepository;
+    private final LikeRepository likeRepository;
     private final GeometryFactory geometryFactory;
     private final NotificationService notificationService;
 
@@ -138,7 +140,7 @@ public MyDiariesResponse getMyDiaries(Long memberId, DiaryFilterRequest diaryFil
 
         Specification<Diary> spec;
 
-        if(!diaryFilterRequest.hasFilter()){
+        if (!diaryFilterRequest.hasFilter()) {
             LocalDate today = LocalDate.now();
 
             spec = DiarySpecification.filterDiaries(
@@ -153,9 +155,7 @@ public MyDiariesResponse getMyDiaries(Long memberId, DiaryFilterRequest diaryFil
 
             diaryPage = diaryRepository.findAll(spec,
                     PageRequest.of(diaryFilterRequest.getKey(), diaryFilterRequest.getSize()));
-        }
-
-        else{
+        } else {
             spec = DiarySpecification.filterDiaries(
                             diaryFilterRequest.getKeyword(),
                             emojis,
@@ -167,7 +167,8 @@ public MyDiariesResponse getMyDiaries(Long memberId, DiaryFilterRequest diaryFil
                     .and((root, query, builder) -> builder.equal(root.get("member"), currentMember));
 
             diaryPage = diaryRepository.findAll(spec,
-                    PageRequest.of(diaryFilterRequest.getKey(), diaryFilterRequest.getSize(), Sort.by(Sort.Direction.DESC, "createAt")));
+                    PageRequest.of(diaryFilterRequest.getKey(), diaryFilterRequest.getSize(),
+                            Sort.by(Sort.Direction.DESC, "createAt")));
         }
 
         List<MyDiarySimpleResponse> diaryDTOs = diaryPage.getContent().stream()
@@ -186,7 +187,7 @@ public MyDiariesResponse getMyDiaries(Long memberId, DiaryFilterRequest diaryFil
     @Transactional(readOnly = true)
     public MyDiaryResponse getMyDiary(Long memberId, Long diaryId) {
         Diary diary = getExistDiary(memberId, diaryId);
-        return convertToMyDiaryResponseDto(diary);
+        return convertToMyDiaryResponseDto(diary, memberId);
     }
 
     // 내 일기 위치 조회
@@ -282,7 +283,7 @@ private Diary getExistDiary(Long memberId, Long diaryId) {
     }
 
     //상세 조회시 일기DTO 변환
-    private MyDiaryResponse convertToMyDiaryResponseDto(Diary savedDiary) {
+    private MyDiaryResponse convertToMyDiaryResponseDto(Diary savedDiary, Long memberId) {
         // 카테고리 찾음
         List<DiaryCategory> diaryCategories = diaryCategoryRepository.findByDiary(savedDiary);
         List<CategoryResponse> categoryResponseList = diaryCategories.stream()
@@ -292,6 +293,8 @@ private MyDiaryResponse convertToMyDiaryResponseDto(Diary savedDiary) {
                         .build())
                 .collect(Collectors.toList());
 
+        boolean isLiked = likeRepository.existsByMemberIdAndDiaryId(memberId, savedDiary.getId());
+
         return MyDiaryResponse.builder()
                 .id(savedDiary.getId())
                 .categories(categoryResponseList)
@@ -300,6 +303,7 @@ private MyDiaryResponse convertToMyDiaryResponseDto(Diary savedDiary) {
                 .isBookmark(savedDiary.isBookmark())
                 .emoji(savedDiary.getEmoji())
                 .content(savedDiary.getContent())
+                .isLiked(isLiked)
                 .createAt(savedDiary.getCreateAt())
                 .build();
     }
diff --git a/src/main/java/com/potatocake/everymoment/service/FriendDiaryService.java b/src/main/java/com/potatocake/everymoment/service/FriendDiaryService.java
index 0d324a9..14daba2 100644
--- a/src/main/java/com/potatocake/everymoment/service/FriendDiaryService.java
+++ b/src/main/java/com/potatocake/everymoment/service/FriendDiaryService.java
@@ -20,7 +20,6 @@
 import com.potatocake.everymoment.repository.FriendRepository;
 import com.potatocake.everymoment.repository.LikeRepository;
 import com.potatocake.everymoment.repository.MemberRepository;
-import java.time.LocalDate;
 import java.util.List;
 import java.util.stream.Collectors;
 import lombok.RequiredArgsConstructor;
@@ -59,16 +58,17 @@ public FriendDiariesResponse getFriendDiaries(Long memberId, DiaryFilterRequest
         List<String> emojis = diaryFilterRequest.getEmojis();
 
         Specification<Diary> spec = FriendDiarySpecification.filterDiaries(
-                            diaryFilterRequest.getKeyword(),
-                            emojis,
-                            categories,
-                            diaryFilterRequest.getDate(),
-                            diaryFilterRequest.getFrom(),
-                            diaryFilterRequest.getUntil())
-                    .and((root, query, builder) -> root.get("member").get("id").in(friendIdList));
+                        diaryFilterRequest.getKeyword(),
+                        emojis,
+                        categories,
+                        diaryFilterRequest.getDate(),
+                        diaryFilterRequest.getFrom(),
+                        diaryFilterRequest.getUntil())
+                .and((root, query, builder) -> root.get("member").get("id").in(friendIdList));
 
         diaryPage = diaryRepository.findAll(spec,
-                PageRequest.of(diaryFilterRequest.getKey(), diaryFilterRequest.getSize(), Sort.by(Sort.Direction.DESC, "createAt")));
+                PageRequest.of(diaryFilterRequest.getKey(), diaryFilterRequest.getSize(),
+                        Sort.by(Sort.Direction.DESC, "createAt")));
 
         List<FriendDiarySimpleResponse> friendDiarySimpleResponseList = diaryPage.getContent().stream()
                 .map(this::convertToFriendDiariesResponseDTO)
@@ -87,7 +87,7 @@ public FriendDiaryResponse getFriendDiary(Long memberId, Long diaryId) {
         Diary diary = diaryRepository.findById(diaryId)
                 .orElseThrow(() -> new GlobalException(ErrorCode.DIARY_NOT_FOUND));
 
-        if(!diary.isPublic()){
+        if (!diary.isPublic()) {
             throw new GlobalException(ErrorCode.DIARY_NOT_PUBLIC);
         }
 
@@ -115,6 +115,7 @@ public FriendDiaryResponse getFriendDiary(Long memberId, Long diaryId) {
 
         //like 갯수 반환
         Long likeCount = likeRepository.countByDiary(diary);
+        boolean isLiked = likeRepository.existsByMemberIdAndDiaryId(memberId, diary.getId());
 
         LikeCountResponse count = LikeCountResponse.builder()
                 .likeCount(likeCount)
@@ -127,6 +128,7 @@ public FriendDiaryResponse getFriendDiary(Long memberId, Long diaryId) {
                 .emoji(diary.getEmoji())
                 .content(diary.getContent())
                 .likeCount(count)
+                .isLiked(isLiked)
                 .createAt(diary.getCreateAt())
                 .build();
 
diff --git a/src/main/java/com/potatocake/everymoment/service/LikeService.java b/src/main/java/com/potatocake/everymoment/service/LikeService.java
index 6f9d90f..d2c5586 100644
--- a/src/main/java/com/potatocake/everymoment/service/LikeService.java
+++ b/src/main/java/com/potatocake/everymoment/service/LikeService.java
@@ -41,7 +41,7 @@ public void toggleLike(Long memberId, Long diaryId) {
         Diary diary = diaryRepository.findById(diaryId)
                 .orElseThrow(() -> new GlobalException(ErrorCode.DIARY_NOT_FOUND));
 
-        if (!diary.isPublic()) {
+        if (!diary.isPublic() && !diary.checkOwner(memberId)) {
             throw new GlobalException(ErrorCode.DIARY_NOT_PUBLIC);
         }