diff --git a/src/main/java/treehouse/server/api/invitation/business/InvitationService.java b/src/main/java/treehouse/server/api/invitation/business/InvitationService.java
index 1ebae1b..c003110 100644
--- a/src/main/java/treehouse/server/api/invitation/business/InvitationService.java
+++ b/src/main/java/treehouse/server/api/invitation/business/InvitationService.java
@@ -4,7 +4,6 @@
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
-import treehouse.server.api.branch.business.BranchService;
 import treehouse.server.api.invitation.implement.InvitationCommandAdapter;
 import treehouse.server.api.invitation.implement.InvitationQueryAdapter;
 import treehouse.server.api.invitation.presentation.dto.InvitationRequestDTO;
@@ -21,7 +20,6 @@
 import treehouse.server.global.entity.treeHouse.TreeHouse;
 import treehouse.server.global.exception.GlobalErrorCode;
 import treehouse.server.global.exception.ThrowClass.InvitationException;
-import treehouse.server.global.exception.ThrowClass.UserException;
 
 import java.util.List;
 import java.util.stream.Collectors;
@@ -50,7 +48,7 @@ public class InvitationService {
     @Transactional
     public InvitationResponseDTO.getInvitations getInvitations(User user) {
 
-        List<Invitation> invitations = invitationQueryAdapter.findAllByPhone(user.getPhone());
+        List<Invitation> invitations = invitationQueryAdapter.findAllPendingByPhone(user.getPhone());
 
         List<InvitationResponseDTO.getInvitation> invitationDtos = invitations.stream()
                 .map(invitation -> {
diff --git a/src/main/java/treehouse/server/api/invitation/implement/InvitationQueryAdapter.java b/src/main/java/treehouse/server/api/invitation/implement/InvitationQueryAdapter.java
index 9139083..bcc9846 100644
--- a/src/main/java/treehouse/server/api/invitation/implement/InvitationQueryAdapter.java
+++ b/src/main/java/treehouse/server/api/invitation/implement/InvitationQueryAdapter.java
@@ -18,7 +18,7 @@ public class InvitationQueryAdapter {
 
     private final InvitationRepository invitationRepository;
 
-    public List<Invitation> findAllByPhone(String phone) {
+    public List<Invitation> findAllPendingByPhone(String phone) {
         return invitationRepository.findAllByPhone(phone)
                 .stream().filter(invitation -> invitation.getStatus().equals(InvitationStatus.PENDING)).toList();
     }
@@ -45,4 +45,8 @@ public Invitation findAcceptedInvitation(User user, TreeHouse treeHouse) {
                 .filter(invitation -> invitation.getStatus().equals(InvitationStatus.ACCEPTED))
                 .orElseThrow(() -> new InvitationException(GlobalErrorCode.INVITATION_NOT_FOUND));
     }
+
+    public List<Invitation> findAllByPhone(String phone) {
+        return invitationRepository.findAllByPhone(phone);
+    }
 }
diff --git a/src/main/java/treehouse/server/api/user/business/UserService.java b/src/main/java/treehouse/server/api/user/business/UserService.java
index 600e622..f8d4f3f 100644
--- a/src/main/java/treehouse/server/api/user/business/UserService.java
+++ b/src/main/java/treehouse/server/api/user/business/UserService.java
@@ -17,7 +17,6 @@
 import treehouse.server.global.entity.redis.RefreshToken;
 import treehouse.server.global.exception.GlobalErrorCode;
 import treehouse.server.global.exception.ThrowClass.AuthException;
-import treehouse.server.global.exception.ThrowClass.GeneralException;
 import treehouse.server.global.fcm.service.FcmService;
 import treehouse.server.global.redis.service.RedisService;
 import treehouse.server.global.security.jwt.dto.TokenDTO;
@@ -59,7 +58,7 @@ public User findById(Long id){
     public UserResponseDTO.registerUser register(UserRequestDTO.registerUser request){
         User user = UserMapper.toUser(request.getUserName(), request.getPhoneNumber());
         User savedUser = userCommandAdapter.register(user);
-        List<Invitation> receivedInvitations = invitationQueryAdapter.findAllByPhone(request.getPhoneNumber());
+        List<Invitation> receivedInvitations = invitationQueryAdapter.findAllPendingByPhone(request.getPhoneNumber());
         receivedInvitations.forEach(invitation -> {
             invitation.setReceiver(savedUser);
             invitationCommandAdapter.saveInvitation(invitation);
@@ -93,7 +92,7 @@ public UserResponseDTO.reissue reissue(UserRequestDTO.reissue request){
         return UserMapper.toReissue(token.getAccessToken(), token.getRefreshToken());
     }
 
-
+    @Transactional
     public UserResponseDTO.checkUserStatus checkUserStatus(UserRequestDTO.checkUserStatus request) {
 
         Boolean isNewUser = !userQueryAdapter.existByPhoneNumber(request.getPhoneNumber());
diff --git a/src/main/java/treehouse/server/global/entity/Invitation/Invitation.java b/src/main/java/treehouse/server/global/entity/Invitation/Invitation.java
index 78091a6..b96643e 100644
--- a/src/main/java/treehouse/server/global/entity/Invitation/Invitation.java
+++ b/src/main/java/treehouse/server/global/entity/Invitation/Invitation.java
@@ -28,7 +28,7 @@ public class Invitation extends BaseDateTimeEntity {
 
     private LocalDateTime expiredAt; //초대장 만료일자
 
-    @JoinColumn(name = "senderId")
+    @JoinColumn(name = "senderId", nullable = true)
     @ManyToOne(fetch = FetchType.LAZY)
     private Member sender;