diff --git a/src/main/java/com/weatherfit/board/service/BoardService.java b/src/main/java/com/weatherfit/board/service/BoardService.java
index 2c1c468..5cbf97f 100644
--- a/src/main/java/com/weatherfit/board/service/BoardService.java
+++ b/src/main/java/com/weatherfit/board/service/BoardService.java
@@ -157,12 +157,6 @@ public void patchBoard(int boardId, String boardJson, MultipartFile[] images, St
 
         ObjectMapper objectMapper = new ObjectMapper();
 
-        // 기존 이미지 삭제
-        for (ImageEntity image : originalBoard.getImages()) {
-            imageService.deleteImage(image.getImage_url());
-            imageRepository.delete(image);
-        }
-
         BoardUpdateDTO boardUpdateDTO;
         try {
             boardUpdateDTO = objectMapper.readValue(boardJson, BoardUpdateDTO.class);
@@ -171,25 +165,40 @@ public void patchBoard(int boardId, String boardJson, MultipartFile[] images, St
         } catch (JsonProcessingException e) {
             throw new RuntimeException(e);
         }
-        BoardEntity boardEntity = BoardEntity.builder()
-                .boardId(boardId)
-                .content(boardUpdateDTO.getContent())
-                .category(boardUpdateDTO.getCategory())
-                .hashTag(boardUpdateDTO.getHashTag())
-                .build();
 
-        BoardEntity savedBoard = boardRepository.save(boardEntity);
+        List<ImageEntity> newImages = new ArrayList<>();
 
         for (MultipartFile image : images) {
             String imageUrl = imageService.saveImage(image);
 
             ImageEntity imageEntity = ImageEntity.builder()
                     .image_url(imageUrl)
-                    .boardId(originalBoard)  // savedBoard를 originalBoard로 변경
+                    .boardId(originalBoard)
                     .build();
             imageRepository.save(imageEntity);
+
+            newImages.add(imageEntity);
+        }
+
+        // 새로운 이미지 URL과 기존의 이미지 URL을 비교하여 이미지가 수정되었는지 판단합니다.
+        for (ImageEntity originalImage : originalBoard.getImages()) {
+            boolean isModified = newImages.stream().noneMatch(newImage -> newImage.getImage_url().equals(originalImage.getImage_url()));
+            if (isModified) {
+                // 이미지가 수정되었을 경우, 기존의 이미지를 삭제합니다.
+                imageService.deleteImage(originalImage.getImage_url());
+                imageRepository.delete(originalImage);
+            }
         }
 
+        BoardEntity boardEntity = BoardEntity.builder()
+                .boardId(boardId)
+                .content(boardUpdateDTO.getContent())
+                .category(boardUpdateDTO.getCategory())
+                .hashTag(boardUpdateDTO.getHashTag())
+                .images(newImages)
+                .build();
+
+        BoardEntity savedBoard = boardRepository.save(boardEntity);
 
         String afterJoiendString = originalBoard.getTemperature() + "/" + String.join("/", originalBoard.getCategory()) + ":" + String.join("/", boardUpdateDTO.getCategory());
         String afterJoiendString2 = String.join("/", originalBoard.getHashTag()) + ":" + String.join("/", boardUpdateDTO.getHashTag());
@@ -198,16 +207,15 @@ public void patchBoard(int boardId, String boardJson, MultipartFile[] images, St
         originalBoard.setContent(boardUpdateDTO.getContent());
         originalBoard.setCategory(boardUpdateDTO.getCategory());
         originalBoard.setHashTag(boardUpdateDTO.getHashTag());
-        originalBoard.setImages(boardUpdateDTO.getImages());  // 이미지 정보를 boardUpdateDTO에서 가져오는 것이 아니라, 위에서 새로 추가한 이미지 정보를 사용해야 합니다.
+        originalBoard.setImages(newImages);
         boardRepository.save(originalBoard);
 
-
         // 카프카 전송
         kafkaTemplate.send("category", 1, "category", afterJoiendString);
         kafkaTemplate.send("hashtag", 1, "hashtag", afterJoiendString2);
-
     }
 
+
     // 게시글 삭제
     public void deleteBoard(int boardId) {
         Optional<BoardEntity> optionalBoard = Optional.ofNullable(boardRepository.findById(boardId));
diff --git a/src/main/java/com/weatherfit/board/service/ImageService.java b/src/main/java/com/weatherfit/board/service/ImageService.java
index 98e0275..7e8c5ec 100644
--- a/src/main/java/com/weatherfit/board/service/ImageService.java
+++ b/src/main/java/com/weatherfit/board/service/ImageService.java
@@ -9,6 +9,8 @@
 import org.springframework.stereotype.Service;
 import org.springframework.web.multipart.MultipartFile;
 import java.io.IOException;
+import java.math.BigInteger;
+import java.security.MessageDigest;
 import java.time.LocalDateTime;
 import java.time.format.DateTimeFormatter;
 import java.util.UUID;
@@ -27,22 +29,28 @@ public class ImageService {
 
     public String saveImage(MultipartFile file) {
         try {
-            String timestamp = LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyyyMMddHHmmss"));
             String originalFilename = file.getOriginalFilename();
-            String fileName = timestamp + "_" + originalFilename;
+            String fileExtension = originalFilename.substring(originalFilename.lastIndexOf("."));
+
+            // 이미지의 해시값을 생성합니다.
+            MessageDigest md = MessageDigest.getInstance("MD5");
+            byte[] imageBytes = file.getBytes();
+            byte[] digest = md.digest(imageBytes);
+            String imageHash = new BigInteger(1, digest).toString(16); // 변경된 부분
+
+            // 이미지 이름에 해시값을 사용합니다.
+            String fileName = imageHash + fileExtension;
             String fileUrl = "https://" + bucketName + ".s3.amazonaws.com/" + fileName;
 
-            if (amazonS3Client.doesObjectExist(bucketName, fileName)) {
-                fileName = timestamp + "_" + UUID.randomUUID().toString() + "_" + originalFilename;
-                fileUrl = "https://" + bucketName + ".s3.amazonaws.com/" + fileName;
+            if (!amazonS3Client.doesObjectExist(bucketName, fileName)) {
+                ObjectMetadata metadata = new ObjectMetadata();
+                metadata.setContentType(file.getContentType());
+                metadata.setContentLength(file.getSize());
+                amazonS3Client.putObject(bucketName, fileName, file.getInputStream(), metadata);
             }
 
-            ObjectMetadata metadata = new ObjectMetadata();
-            metadata.setContentType(file.getContentType());
-            metadata.setContentLength(file.getSize());
-            amazonS3Client.putObject(bucketName, fileName, file.getInputStream(), metadata);
             return fileUrl;
-        } catch (IOException e) {
+        } catch (Exception e) {
             e.printStackTrace();
             throw new RuntimeException("Failed to upload image to S3", e);
         }