diff --git a/src/main/java/careerfestival/career/mainPage/controller/MainPageController.java b/src/main/java/careerfestival/career/mainPage/controller/MainPageController.java
index 5212803..92d59dd 100644
--- a/src/main/java/careerfestival/career/mainPage/controller/MainPageController.java
+++ b/src/main/java/careerfestival/career/mainPage/controller/MainPageController.java
@@ -201,7 +201,11 @@ public ResponseEntity<Map<String, Object>> getEventsFilter(
         } else {                                // 로그인 하지 않은 사용자일 경우 (필터링 여부)
             if(city !=null || category != null || keywordName != null){                    // 필터링이 된 경우
                 try {
-                    Long regionId = mainPageService.getRegionIdFilter(city, addressLine);
+                    Long regionId = null;
+                    if (city != null) {
+                        regionId = mainPageService.getRegionIdFilter(city, addressLine);
+                    }
+
                     // 1. 조회순으로 보여지는 행사 9개
                     Page<MainPageFestivalListResponseDto> mainPageFestivalListResponseDtos
                             = mainPageService.getEventsFiltered(category, keywordName, regionId, pageable);
@@ -209,7 +213,6 @@ public ResponseEntity<Map<String, Object>> getEventsFilter(
                     List<MainPageResponseDto> mainPageResponseDtoNames = mainPageService.getEventNames();
                     // 3. (219명의 주최자) 정보 입력 공간
                     int countOrganizer = mainPageService.getOrganizerCount();
-
                     // 4. 주최자 정보 페이지 형태 반환
                     Pageable organizerPageable = PageRequest.of(0, 10, Sort.by("countEvent").descending());
                     Page<MainPageOrganizerListResponseDto> mainPageOrganizerListDtos = mainPageService.getOrganizers(organizerPageable);
@@ -234,10 +237,17 @@ public ResponseEntity<Map<String, Object>> getEventsFilter(
                     List<MainPageResponseDto> mainPageResponseDtoNames = mainPageService.getEventNames();
                     // 2. 조회수에 의한 정렬 리스트
                     List<MainPageResponseDto> mainPageResponseDtoViews = mainPageService.getEventsHitsDesc();
+                    // 3. (219명의 주최자) 정보 입력 공간
+                    int countOrganizer = mainPageService.getOrganizerCount();
+                    // 4. 주최자 정보 페이지 형태 반환
+                    Pageable organizerPageable = PageRequest.of(0, 10, Sort.by("countEvent").descending());
+                    Page<MainPageOrganizerListResponseDto> mainPageOrganizerListDtos = mainPageService.getOrganizers(organizerPageable);
 
                     Map<String, Object> mainPageResponseDtoObjectMap = new HashMap<>();
                     mainPageResponseDtoObjectMap.put("eventViews", mainPageResponseDtoViews);
                     mainPageResponseDtoObjectMap.put("eventNames", mainPageResponseDtoNames);
+                    mainPageResponseDtoObjectMap.put("countOrganizer", countOrganizer);
+                    mainPageResponseDtoObjectMap.put("organizers", mainPageOrganizerListDtos);
 
                     return ResponseEntity.ok().body(mainPageResponseDtoObjectMap);
                 } catch (IllegalArgumentException e) {
diff --git a/src/main/java/careerfestival/career/register/service/RegisterService.java b/src/main/java/careerfestival/career/register/service/RegisterService.java
index 1a85e89..7a3ccfa 100644
--- a/src/main/java/careerfestival/career/register/service/RegisterService.java
+++ b/src/main/java/careerfestival/career/register/service/RegisterService.java
@@ -127,29 +127,11 @@ public void registerEvent(String email, MultipartFile eventMainImage, MultipartF
 
         try {
             if(!eventInformImage.isEmpty()){
-                // 이미지 리사이징
-                BufferedImage resizedImage = ImageUtils.resizeImage(eventInformImage, 600, 400);
-
-                // BufferedImage를 byte[]로 변환
-                ByteArrayOutputStream baos = new ByteArrayOutputStream();
-                ImageIO.write(resizedImage, getFileExtension(eventInformImage.getOriginalFilename()), baos);
-                byte[] resizedImageBytes = baos.toByteArray();
-
-                // byte[]를 MultipartFile로 변환
-                MultipartFile multipartFile = new MockMultipartFile(
-                        "resized_" + eventInformImage.getOriginalFilename(),
-                        eventInformImage.getOriginalFilename(),
-                        eventInformImage.getContentType(),
-                        resizedImageBytes
-                );
-
                 // S3에 업로드하고 URL 받기
-                String storedFileName = s3Uploader.upload(multipartFile, "event_inform");
-
+                String storedFileName = s3Uploader.upload(eventInformImage, "event_inform");
                 // 이벤트에 이미지 URL 설정하고 저장
                 event.setEventInformFileUrl(storedFileName);
                 organizer.updateCountEvent();
-                eventRepository.save(event);
             } else {
                 throw new Exception();
             }
@@ -160,9 +142,6 @@ public void registerEvent(String email, MultipartFile eventMainImage, MultipartF
     }
 
 
-
-
-
     // 주최자가 등록한 행사 목록 반환
     public Page<RegisterMainResponseDto> getEventList(Long organizerId, Pageable pageable) {
         Page<Event> events = eventRepository.findPageByOrganizerId(organizerId, pageable);