diff --git a/src/main/java/com/gapple/weeingback/domain/boardgame/domain/Boardgame.java b/src/main/java/com/gapple/weeingback/domain/boardgame/domain/Boardgame.java
index 50bb4d8..27d2842 100644
--- a/src/main/java/com/gapple/weeingback/domain/boardgame/domain/Boardgame.java
+++ b/src/main/java/com/gapple/weeingback/domain/boardgame/domain/Boardgame.java
@@ -28,9 +28,6 @@ public class Boardgame {
     @Column(nullable = false)
     private Long maxOf;
 
-    @Column(nullable = false)
-    private Long joined;
-
     @OneToMany(fetch = FetchType.EAGER)
     private List<Member> members;
 
@@ -46,7 +43,6 @@ public ToBoardgameDto toDto(Boardgame boardgame){
         return new ToBoardgameDto(
                 boardgame.getId().toString(),
                 boardgame.getMaxOf(),
-                boardgame.getJoined(),
                 new NumberNameWithId(
                         creator.getNumber() + " " + creator.getName(),
                         creator.getId().toString()
diff --git a/src/main/java/com/gapple/weeingback/domain/boardgame/domain/ToBoardgameDto.java b/src/main/java/com/gapple/weeingback/domain/boardgame/domain/ToBoardgameDto.java
index 525d9d1..e818b5f 100644
--- a/src/main/java/com/gapple/weeingback/domain/boardgame/domain/ToBoardgameDto.java
+++ b/src/main/java/com/gapple/weeingback/domain/boardgame/domain/ToBoardgameDto.java
@@ -13,7 +13,6 @@
 public class ToBoardgameDto {
     private String id;
     private Long maxOf;
-    private Long joined;
     private NumberNameWithId creator;
     private List<NumberNameWithId> players;
 }
diff --git a/src/main/java/com/gapple/weeingback/domain/boardgame/service/implmentation/BoardgameServiceImpl.java b/src/main/java/com/gapple/weeingback/domain/boardgame/service/implmentation/BoardgameServiceImpl.java
index 53649ef..5c6d169 100644
--- a/src/main/java/com/gapple/weeingback/domain/boardgame/service/implmentation/BoardgameServiceImpl.java
+++ b/src/main/java/com/gapple/weeingback/domain/boardgame/service/implmentation/BoardgameServiceImpl.java
@@ -36,7 +36,6 @@ public void submitBoardgame(Long maxOf) {
                 .joined(0L)
                 .build();
 
-        member.addBoardgame(boardgame);
         boardgameRepository.save(boardgame);
     }
 
@@ -52,26 +51,22 @@ public BoardgameShowResponse showAllBoardgame() {
     }
 
     @Override
-    public void joinBoardgame(UUID id) {
+    @Transactional
+    public void joinBoardgame(UUID boardgameId) {
         String memberId = SecurityContextHolder.getContext().getAuthentication().getName();
         Member member = memberRepository.findMemberById(UUID.fromString(memberId)).orElseThrow(MemberNotFoundException::new);
 
-        Boardgame boardgame = boardgameRepository.findBoardgameById(id).orElseThrow(BoardgameNotFoundException::new);
+        Boardgame boardgame = boardgameRepository.findBoardgameById(boardgameId).orElseThrow(BoardgameNotFoundException::new);
 
         boardgame.addMember(member);
 
+        memberRepository.save(member);
         boardgameRepository.save(boardgame);
     }
 
     @Override
     @Transactional
     public void doneBoardgame(UUID boardgameId) {
-        UUID memberId = UUID.fromString(SecurityContextHolder.getContext().getAuthentication().getName());
-        Member member = memberRepository.findMemberById(memberId).orElseThrow(MemberNotFoundException::new);
-
-        member.removeBoardgame(boardgameRepository.findBoardgameById(boardgameId).get());
-        memberRepository.save(member);
-
         boardgameRepository.deleteById(boardgameId);
     }
 }
diff --git a/src/main/java/com/gapple/weeingback/domain/member/entity/Member.java b/src/main/java/com/gapple/weeingback/domain/member/entity/Member.java
index 86220eb..4f35cf1 100644
--- a/src/main/java/com/gapple/weeingback/domain/member/entity/Member.java
+++ b/src/main/java/com/gapple/weeingback/domain/member/entity/Member.java
@@ -39,15 +39,11 @@ public class Member implements GrantedAuthority {
   @Column(columnDefinition = "VARCHAR(80)", nullable = false)
   private String role;
 
-  @OneToMany(fetch = FetchType.EAGER)
+  @OneToMany
   @JoinColumn(name = "consulting_id")
   private List<Consulting> consulting;
 
-  @ManyToMany(fetch = FetchType.EAGER)
-  @JoinColumn(name = "boardgame_id")
-  private List<Boardgame> boardgames;
-
-  @OneToMany(fetch = FetchType.EAGER)
+  @OneToMany
   @JoinColumn(name = "diary_id")
   private List<Diary> diaries;
 
@@ -59,13 +55,6 @@ public void addDiary(Diary diary){
     this.diaries.add(diary);
   }
 
-  public void addBoardgame(Boardgame boardgame){
-    this.boardgames.add(boardgame);
-  }
-
-  public void removeBoardgame(Boardgame boardgame){
-    this.boardgames.remove(boardgame);
-  }
 
   @Override
   public String getAuthority() {