diff --git a/src/main/java/sopt/univoice/domain/notice/repository/NoticeLikeRepository.java b/src/main/java/sopt/univoice/domain/notice/repository/NoticeLikeRepository.java
index 56e9160..38d9f56 100644
--- a/src/main/java/sopt/univoice/domain/notice/repository/NoticeLikeRepository.java
+++ b/src/main/java/sopt/univoice/domain/notice/repository/NoticeLikeRepository.java
@@ -9,4 +9,6 @@
 
 public interface NoticeLikeRepository extends JpaRepository<NoticeLike, Long> {
     Optional<NoticeLike> findByNoticeAndMember(Notice notice, Member member);
+
+    boolean existsByNoticeAndMember(Notice notice, Member member);
 }
diff --git a/src/main/java/sopt/univoice/domain/notice/service/NoticeService.java b/src/main/java/sopt/univoice/domain/notice/service/NoticeService.java
index b3ddcc6..f7d34df 100644
--- a/src/main/java/sopt/univoice/domain/notice/service/NoticeService.java
+++ b/src/main/java/sopt/univoice/domain/notice/service/NoticeService.java
@@ -129,6 +129,12 @@ public void likeNotice(Long noticeId) {
         Notice notice = noticeRepository.findById(noticeId)
                 .orElseThrow(() -> new RuntimeException("공지사항이 존재하지 않습니다."));
 
+        // 이미 좋아요를 누른 것인지 확인
+        boolean alreadyLiked = noticeLikeRepository.existsByNoticeAndMember(notice, member);
+        if (alreadyLiked) {
+            throw new BusinessException(ErrorMessage.ALREADY_LIKED);
+        }
+
         // noticeLike를 1 증가시킵니다.
         notice.setNoticeLike(notice.getNoticeLike() + 1);
         noticeRepository.save(notice);
diff --git a/src/main/java/sopt/univoice/infra/common/exception/message/ErrorMessage.java b/src/main/java/sopt/univoice/infra/common/exception/message/ErrorMessage.java
index f719d16..d9581d2 100644
--- a/src/main/java/sopt/univoice/infra/common/exception/message/ErrorMessage.java
+++ b/src/main/java/sopt/univoice/infra/common/exception/message/ErrorMessage.java
@@ -13,6 +13,7 @@ public enum ErrorMessage {
     JWT_UNAUTHORIZED_EXCEPTION(HttpStatus.UNAUTHORIZED.value(), "사용자의 로그인 검증을 실패했습니다."),
     APPROVEADMIN_UNAUTHORIZED_EXCEPTION(HttpStatus.UNAUTHORIZED.value(), "승인된 관리자의 로그인 검증을 실패했습니다."),
     ALREADY_SAVED(HttpStatus.CONFLICT.value(), "이미 저장한 공지입니다."),
+    ALREADY_LIKED(HttpStatus.CONFLICT.value(), "이미 좋아요한 공지입니다."),
     ;
     private final int status;
     private final String message;