diff --git a/server/src/main/java/com/yogit/server/board/repository/BoardUserRepository.java b/server/src/main/java/com/yogit/server/board/repository/BoardUserRepository.java
index 6864497..875b98a 100644
--- a/server/src/main/java/com/yogit/server/board/repository/BoardUserRepository.java
+++ b/server/src/main/java/com/yogit/server/board/repository/BoardUserRepository.java
@@ -24,4 +24,6 @@ public interface BoardUserRepository extends JpaRepository<BoardUser, Long> {
 
     @Query("select bu from BoardUser bu where bu.status = 'ACTIVE' and bu.board.id = :boardId")
     List<BoardUser> findAllByBoardId(@Param("boardId") Long boardId);
+
+    Void deleteAllByUserId(Long userId);
 }
diff --git a/server/src/main/java/com/yogit/server/user/service/UserServiceImpl.java b/server/src/main/java/com/yogit/server/user/service/UserServiceImpl.java
index eaa1a7c..0a1d12b 100644
--- a/server/src/main/java/com/yogit/server/user/service/UserServiceImpl.java
+++ b/server/src/main/java/com/yogit/server/user/service/UserServiceImpl.java
@@ -3,6 +3,7 @@
 import com.yogit.server.applelogin.exception.InvalidRefreshTokenException;
 import com.yogit.server.applelogin.exception.NotFoundRefreshTokenException;
 import com.yogit.server.block.service.BlockService;
+import com.yogit.server.board.repository.BoardUserRepository;
 import com.yogit.server.config.domain.BaseStatus;
 import com.yogit.server.global.dto.ApplicationResponse;
 import com.yogit.server.global.service.TokenService;
@@ -43,6 +44,7 @@ public class UserServiceImpl implements UserService {
     private final CityRepository cityRepository;
     private final InterestRepository interestRepository;
     private final UserInterestRepository userInterestRepository;
+    private final BoardUserRepository boardUserRepository;
     private final AwsS3Service awsS3Service;
     private final BlockService blockService;
     private final TokenService tokenService;
@@ -217,6 +219,8 @@ public ApplicationResponse<Void> delUser(Long userId){
         userImageRepository.deleteAllByUserId(user.getId());
         // user_interest 엔티티 삭제
         userInterestRepository.deleteAllByUserId(user.getId());
+        // board_user 엔티티 삭제
+        boardUserRepository.deleteAllByUserId(user.getId());
 
         return ApplicationResponse.ok();
     }