diff --git a/src/main/java/com/umc/naoman/domain/agenda/dto/AgendaResponse.java b/src/main/java/com/umc/naoman/domain/agenda/dto/AgendaResponse.java
index 85bce4c..95a8a6b 100644
--- a/src/main/java/com/umc/naoman/domain/agenda/dto/AgendaResponse.java
+++ b/src/main/java/com/umc/naoman/domain/agenda/dto/AgendaResponse.java
@@ -39,7 +39,7 @@ public static class PagedAgendaDetailInfo {
         private List<AgendaDetailInfo> agendaDetailInfoList;
         private int totalPages;
         private long totalElements; // 해당 조건에 부합하는 요소의 총 개수
-        private boolean isFirst; // 첫 페이지 여부
-        private boolean isLast; // 마지막 페이지 여부
+        private Boolean isFirst; // 첫 페이지 여부
+        private Boolean isLast; // 마지막 페이지 여부
     }
 }
diff --git a/src/main/java/com/umc/naoman/domain/agenda/entity/AgendaPhoto.java b/src/main/java/com/umc/naoman/domain/agenda/entity/AgendaPhoto.java
index e09f69b..9f174da 100644
--- a/src/main/java/com/umc/naoman/domain/agenda/entity/AgendaPhoto.java
+++ b/src/main/java/com/umc/naoman/domain/agenda/entity/AgendaPhoto.java
@@ -40,4 +40,8 @@ public void delete() {
         }
         super.delete();
     }
+
+    public void nullifyPhoto() {
+        this.photo = null;
+    }
 }
\ No newline at end of file
diff --git a/src/main/java/com/umc/naoman/domain/agenda/repository/AgendaPhotoRepository.java b/src/main/java/com/umc/naoman/domain/agenda/repository/AgendaPhotoRepository.java
index 47e518f..31da359 100644
--- a/src/main/java/com/umc/naoman/domain/agenda/repository/AgendaPhotoRepository.java
+++ b/src/main/java/com/umc/naoman/domain/agenda/repository/AgendaPhotoRepository.java
@@ -2,6 +2,7 @@
 
 import com.umc.naoman.domain.agenda.entity.AgendaPhoto;
 import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
 import org.springframework.stereotype.Repository;
 
 import java.util.List;
@@ -10,4 +11,5 @@
 public interface AgendaPhotoRepository extends JpaRepository<AgendaPhoto, Long> {
     List<AgendaPhoto> findByAgendaId(Long agendaId);
     List<AgendaPhoto> findByPhotoId(Long photoId);
+    List<AgendaPhoto> findByPhotoIdIn(List<Long> photoIdList);
 }
diff --git a/src/main/java/com/umc/naoman/domain/agenda/service/AgendaPhotoService.java b/src/main/java/com/umc/naoman/domain/agenda/service/AgendaPhotoService.java
index 74ec969..0677b68 100644
--- a/src/main/java/com/umc/naoman/domain/agenda/service/AgendaPhotoService.java
+++ b/src/main/java/com/umc/naoman/domain/agenda/service/AgendaPhotoService.java
@@ -11,4 +11,5 @@ public interface AgendaPhotoService {
     AgendaPhoto findAgendaPhoto(Long agendaPhotoId);
     List<AgendaPhoto> findAgendaPhotoList(Long agendaId);
     List<AgendaPhoto> findAgendaPhotoListByPhotoId(Long photoId);
+    void nullifyPhotoInAgendaPhotoList(List<Long> photoIdList);
 }
diff --git a/src/main/java/com/umc/naoman/domain/agenda/service/AgendaPhotoServiceImpl.java b/src/main/java/com/umc/naoman/domain/agenda/service/AgendaPhotoServiceImpl.java
index 8ad4211..c2fa617 100644
--- a/src/main/java/com/umc/naoman/domain/agenda/service/AgendaPhotoServiceImpl.java
+++ b/src/main/java/com/umc/naoman/domain/agenda/service/AgendaPhotoServiceImpl.java
@@ -5,7 +5,7 @@
 import com.umc.naoman.domain.agenda.entity.AgendaPhoto;
 import com.umc.naoman.domain.agenda.repository.AgendaPhotoRepository;
 import com.umc.naoman.domain.photo.entity.Photo;
-import com.umc.naoman.domain.photo.service.PhotoService;
+import com.umc.naoman.domain.photo.service.PhotoQueryService;
 import com.umc.naoman.global.error.BusinessException;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
@@ -19,14 +19,14 @@
 @Transactional(readOnly = true)
 @RequiredArgsConstructor
 public class AgendaPhotoServiceImpl implements AgendaPhotoService {
-    private final PhotoService photoService;
+    private final PhotoQueryService photoQueryService;
     private final AgendaPhotoRepository agendaPhotoRepository;
 
     @Override
     @Transactional
     public void saveAgendaPhotoList(Agenda agenda, List<Long> photos) {
         for (Long photoId : photos) {
-            Photo photo = photoService.findPhoto(photoId);
+            Photo photo = photoQueryService.findPhoto(photoId);
             agendaPhotoRepository.save(AgendaPhotoConverter.toEntity(agenda, photo));
         }
     }
@@ -46,4 +46,12 @@ public List<AgendaPhoto> findAgendaPhotoList(Long agendaId) {
     public List<AgendaPhoto> findAgendaPhotoListByPhotoId(Long photoId) {
         return agendaPhotoRepository.findByPhotoId(photoId);
     }
+
+    @Override
+    @Transactional
+    public void nullifyPhotoInAgendaPhotoList(List<Long> photoIdList) {
+        List<AgendaPhoto> agendaPhotoList = agendaPhotoRepository.findByPhotoIdIn(photoIdList);
+        agendaPhotoList
+                .forEach(AgendaPhoto::nullifyPhoto);
+    }
 }
diff --git a/src/main/java/com/umc/naoman/domain/agenda/service/AgendaServiceImpl.java b/src/main/java/com/umc/naoman/domain/agenda/service/AgendaServiceImpl.java
index 6bc386e..4092972 100644
--- a/src/main/java/com/umc/naoman/domain/agenda/service/AgendaServiceImpl.java
+++ b/src/main/java/com/umc/naoman/domain/agenda/service/AgendaServiceImpl.java
@@ -28,9 +28,9 @@
 @Transactional(readOnly = true)
 @RequiredArgsConstructor
 public class AgendaServiceImpl implements AgendaService {
-    private final AgendaRepository agendaRepository;
     private final ShareGroupService shareGroupService;
     private final AgendaPhotoService agendaPhotoService;
+    private final AgendaRepository agendaRepository;
     private final AgendaConverter agendaConverter;
 
     @Override
diff --git a/src/main/java/com/umc/naoman/domain/member/service/MemberServiceImpl.java b/src/main/java/com/umc/naoman/domain/member/service/MemberServiceImpl.java
index 5d218d7..d02f5c8 100644
--- a/src/main/java/com/umc/naoman/domain/member/service/MemberServiceImpl.java
+++ b/src/main/java/com/umc/naoman/domain/member/service/MemberServiceImpl.java
@@ -13,6 +13,7 @@
 import com.umc.naoman.domain.member.entity.SocialType;
 import com.umc.naoman.domain.member.repository.MemberRepository;
 import com.umc.naoman.domain.member.service.redis.RefreshTokenService;
+import com.umc.naoman.domain.photo.service.PhotoQueryService;
 import com.umc.naoman.domain.photo.service.PhotoService;
 import com.umc.naoman.domain.shareGroup.entity.Profile;
 import com.umc.naoman.domain.shareGroup.entity.Role;
@@ -35,6 +36,7 @@
 public class MemberServiceImpl implements MemberService {
     private final RefreshTokenService refreshTokenService;
     private final PhotoService photoService;
+    private final PhotoQueryService photoQueryService;
     private final MemberRepository memberRepository;
     private final MemberConverter memberConverter;
     private final ShareGroupService shareGroupService;
@@ -97,7 +99,7 @@ public CheckMemberRegistration checkRegistration(LoginRequest request) {
 
     @Override
     public HasSamplePhoto hasSamplePhoto(Member member) {
-        boolean hasSamplePhoto = photoService.hasSamplePhoto(member);
+        boolean hasSamplePhoto = photoQueryService.hasSamplePhoto(member);
         return memberConverter.toHasSamplePhoto(hasSamplePhoto);
     }
 
diff --git a/src/main/java/com/umc/naoman/domain/photo/service/PhotoQueryService.java b/src/main/java/com/umc/naoman/domain/photo/service/PhotoQueryService.java
new file mode 100644
index 0000000..b34d257
--- /dev/null
+++ b/src/main/java/com/umc/naoman/domain/photo/service/PhotoQueryService.java
@@ -0,0 +1,9 @@
+package com.umc.naoman.domain.photo.service;
+
+import com.umc.naoman.domain.member.entity.Member;
+import com.umc.naoman.domain.photo.entity.Photo;
+
+public interface PhotoQueryService {
+    Photo findPhoto(Long photoId);
+    boolean hasSamplePhoto(Member member);
+}
diff --git a/src/main/java/com/umc/naoman/domain/photo/service/PhotoQueryServiceImpl.java b/src/main/java/com/umc/naoman/domain/photo/service/PhotoQueryServiceImpl.java
new file mode 100644
index 0000000..229a485
--- /dev/null
+++ b/src/main/java/com/umc/naoman/domain/photo/service/PhotoQueryServiceImpl.java
@@ -0,0 +1,31 @@
+package com.umc.naoman.domain.photo.service;
+
+import com.umc.naoman.domain.member.entity.Member;
+import com.umc.naoman.domain.photo.entity.Photo;
+import com.umc.naoman.domain.photo.repository.PhotoRepository;
+import com.umc.naoman.domain.photo.repository.SamplePhotoRepository;
+import com.umc.naoman.global.error.BusinessException;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import static com.umc.naoman.global.error.code.S3ErrorCode.PHOTO_NOT_FOUND;
+
+@Service
+@Transactional(readOnly = true)
+@RequiredArgsConstructor
+public class PhotoQueryServiceImpl implements PhotoQueryService {
+    private final PhotoRepository photoRepository;
+    private final SamplePhotoRepository samplePhotoRepository;
+
+    @Override
+    public Photo findPhoto(Long photoId) {
+        return photoRepository.findById(photoId)
+                .orElseThrow(() -> new BusinessException(PHOTO_NOT_FOUND));
+    }
+
+    @Override
+    public boolean hasSamplePhoto(Member member) {
+        return samplePhotoRepository.existsByMemberId(member.getId());
+    }
+}
diff --git a/src/main/java/com/umc/naoman/domain/photo/service/PhotoService.java b/src/main/java/com/umc/naoman/domain/photo/service/PhotoService.java
index a75c1e6..7e714cc 100644
--- a/src/main/java/com/umc/naoman/domain/photo/service/PhotoService.java
+++ b/src/main/java/com/umc/naoman/domain/photo/service/PhotoService.java
@@ -34,7 +34,7 @@ public interface PhotoService {
 
     void deleteSamplePhotoList(Member member);
 
-    Photo findPhoto(Long photoId);
+//    Photo findPhoto(Long photoId);
 
-    boolean hasSamplePhoto(Member member);
+//    boolean hasSamplePhoto(Member member);
 }
diff --git a/src/main/java/com/umc/naoman/domain/photo/service/PhotoServiceImpl.java b/src/main/java/com/umc/naoman/domain/photo/service/PhotoServiceImpl.java
index 5bb8495..8967522 100644
--- a/src/main/java/com/umc/naoman/domain/photo/service/PhotoServiceImpl.java
+++ b/src/main/java/com/umc/naoman/domain/photo/service/PhotoServiceImpl.java
@@ -5,6 +5,7 @@
 import com.amazonaws.services.s3.Headers;
 import com.amazonaws.services.s3.model.CannedAccessControlList;
 import com.amazonaws.services.s3.model.GeneratePresignedUrlRequest;
+import com.umc.naoman.domain.agenda.service.AgendaPhotoService;
 import com.umc.naoman.domain.member.entity.Member;
 import com.umc.naoman.domain.photo.converter.PhotoConverter;
 import com.umc.naoman.domain.photo.converter.SamplePhotoConverter;
@@ -51,6 +52,7 @@
 @RequiredArgsConstructor
 public class PhotoServiceImpl implements PhotoService {
     private final ShareGroupService shareGroupService;
+    private final AgendaPhotoService agendaPhotoService;
     private final FaceDetectionService faceDetectionService;
     private final PhotoRepository photoRepository;
     private final SamplePhotoRepository samplePhotoRepository;
@@ -346,8 +348,10 @@ public void deletePhotoListByShareGroupId(Long shareGroupId) {
         // Elasticsearch 사진 데이터 삭제
         List<Long> photoIdList = photoEsClientRepository.deletePhotoEsByShareGroupId(shareGroupId);
 
-        List<Photo> photoList = photoRepository.findByIdIn(photoIdList);
+        // 삭제하려는 사진들 중 안건 후보로 등록된 것들에 대하여, 해당 사진들의 참조를 삭제
+        agendaPhotoService.nullifyPhotoInAgendaPhotoList(photoIdList);
 
+        List<Photo> photoList = photoRepository.findByIdIn(photoIdList);
         // S3 버킷 사진 데이터 삭제
         for (Photo photo : photoList) {
             deletePhoto(photo.getName());
@@ -380,6 +384,7 @@ private void validateShareGroupAndProfile(Long shareGroupId, Member member) {
         shareGroupService.findProfile(shareGroupId, member.getId());
     }
 
+    /*
     @Override
     public Photo findPhoto(Long photoId) {
         return photoRepository.findById(photoId)
@@ -390,4 +395,5 @@ public Photo findPhoto(Long photoId) {
     public boolean hasSamplePhoto(Member member) {
         return samplePhotoRepository.existsByMemberId(member.getId());
     }
+    */
 }