diff --git a/src/main/java/LlikelionKNU/KNUfest/domain/booth/controller/BoothController.java b/src/main/java/LlikelionKNU/KNUfest/domain/booth/controller/BoothController.java
index c413537..a0e0b9c 100644
--- a/src/main/java/LlikelionKNU/KNUfest/domain/booth/controller/BoothController.java
+++ b/src/main/java/LlikelionKNU/KNUfest/domain/booth/controller/BoothController.java
@@ -17,24 +17,27 @@ public class BoothController {
 
     @GetMapping()
     @Operation(summary = "모든 부스정보 조회", description = "모든 부스의 id와 좋아요를 보내준다. 그 부스 목록에 뜨는 걸로 쓰면 됨")
-    public ResponseEntity<AllBooth> getAllbooth(){
-        AllBooth booths = service.getAllbooth();
+    public ResponseEntity<AllBooth> getAllbooth(
+            @RequestParam("userHash") String userHash
+    ){
+        AllBooth booths = service.getAllbooth(userHash);
         return ResponseEntity.ok().body(booths);
     }
 
     @GetMapping("{boothId}")
     @Operation(summary = "특정 부스정보 조회", description = "특정 부스의 id, 좋아요, 오래된 순 댓글 5개를 보내준다. 부스 별 페이지에 갖다 쓰면 됨" )
     public ResponseEntity<BoothDetail> getBooth(
-            @PathVariable("boothId") int boothId
+            @PathVariable("boothId") Long boothId,
+            @RequestParam("userHash") String userHash
     ){
-        BoothDetail boothDto = service.getBooth(boothId);
+        BoothDetail boothDto = service.getBooth(boothId, userHash);
         return ResponseEntity.ok().body(boothDto);
     }
 
     @PatchMapping("{boothId}")
     @Operation(summary = "특정 부스 좋아요 업데이트", description = "특정 부스의 좋아요를 +1 한다.")
     public ResponseEntity<BasicResponse> updateLikes(
-            @PathVariable("boothId") int boothId
+            @PathVariable("boothId") Long boothId
     ){
         service.updateLikes(boothId);
         BasicResponse response = BasicResponse.builder()
diff --git a/src/main/java/LlikelionKNU/KNUfest/domain/booth/dto/Booth.java b/src/main/java/LlikelionKNU/KNUfest/domain/booth/dto/Booth.java
index e035142..2d7bc1e 100644
--- a/src/main/java/LlikelionKNU/KNUfest/domain/booth/dto/Booth.java
+++ b/src/main/java/LlikelionKNU/KNUfest/domain/booth/dto/Booth.java
@@ -10,6 +10,8 @@
 @RequiredArgsConstructor
 @AllArgsConstructor
 public class Booth {
-    int id;
+    Long id;
+    String boothName;
     int likes;
+    boolean Likable;
 }
diff --git a/src/main/java/LlikelionKNU/KNUfest/domain/booth/dto/BoothDetail.java b/src/main/java/LlikelionKNU/KNUfest/domain/booth/dto/BoothDetail.java
index b175656..a0c83cb 100644
--- a/src/main/java/LlikelionKNU/KNUfest/domain/booth/dto/BoothDetail.java
+++ b/src/main/java/LlikelionKNU/KNUfest/domain/booth/dto/BoothDetail.java
@@ -9,7 +9,11 @@
 @Data
 @Builder
 public class BoothDetail {
-    int id;
+    Long id;
+    String boothName;
     int likes;
+    List<String> urls;
+    boolean Likable;
+
     List<Comment> comments;
 }
diff --git a/src/main/java/LlikelionKNU/KNUfest/domain/booth/entity/BoothEntity.java b/src/main/java/LlikelionKNU/KNUfest/domain/booth/entity/BoothEntity.java
index 996c1b4..5b07d2f 100644
--- a/src/main/java/LlikelionKNU/KNUfest/domain/booth/entity/BoothEntity.java
+++ b/src/main/java/LlikelionKNU/KNUfest/domain/booth/entity/BoothEntity.java
@@ -1,6 +1,7 @@
 package LlikelionKNU.KNUfest.domain.booth.entity;
 
 import LlikelionKNU.KNUfest.domain.comment.entity.CommentEntity;
+import LlikelionKNU.KNUfest.domain.user.entity.UserBoothEntity;
 import LlikelionKNU.KNUfest.global.basic.BasicEntity;
 import jakarta.persistence.*;
 import lombok.*;
@@ -17,13 +18,20 @@
 @Table(name = "BOOTH")
 public class BoothEntity extends BasicEntity {
 
+    @Column(name="booth_name")
+    private String boothName;
+
     @Column(name="likes")
     @ColumnDefault("0")
     private int likes;
 
+
     @OneToMany(mappedBy = "booth", fetch = FetchType.LAZY)
     private List<CommentEntity> commentEntityList;
 
+    @OneToMany(mappedBy = "boothEntity", fetch = FetchType.LAZY)
+    private UserBoothEntity userBoothEntity;
+
     @ElementCollection
     @CollectionTable(
             name = "URL_LIST",
diff --git a/src/main/java/LlikelionKNU/KNUfest/domain/booth/service/BoothService.java b/src/main/java/LlikelionKNU/KNUfest/domain/booth/service/BoothService.java
index 55d43fd..7c56400 100644
--- a/src/main/java/LlikelionKNU/KNUfest/domain/booth/service/BoothService.java
+++ b/src/main/java/LlikelionKNU/KNUfest/domain/booth/service/BoothService.java
@@ -4,8 +4,8 @@
 import LlikelionKNU.KNUfest.domain.booth.dto.BoothDetail;
 
 public interface BoothService {
-    AllBooth getAllbooth();
-    BoothDetail getBooth(int id);
-    void updateLikes(int id);
+    AllBooth getAllbooth(String userHash);
+    BoothDetail getBooth(Long id, String userHash);
+    void updateLikes(Long id);
 
 }
diff --git a/src/main/java/LlikelionKNU/KNUfest/domain/booth/service/BoothServiceImpl.java b/src/main/java/LlikelionKNU/KNUfest/domain/booth/service/BoothServiceImpl.java
index 5997e4a..5a02557 100644
--- a/src/main/java/LlikelionKNU/KNUfest/domain/booth/service/BoothServiceImpl.java
+++ b/src/main/java/LlikelionKNU/KNUfest/domain/booth/service/BoothServiceImpl.java
@@ -6,6 +6,10 @@
 import LlikelionKNU.KNUfest.domain.booth.entity.BoothEntity;
 import LlikelionKNU.KNUfest.domain.booth.repository.BoothRepository;
 import LlikelionKNU.KNUfest.domain.comment.service.CommentService;
+import LlikelionKNU.KNUfest.domain.user.entity.UserBoothEntity;
+import LlikelionKNU.KNUfest.domain.user.service.UserBoothService;
+import LlikelionKNU.KNUfest.domain.user.service.UserService;
+import LlikelionKNU.KNUfest.domain.user.service.UserServiceImpl;
 import LlikelionKNU.KNUfest.global.error.NoExistException;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
@@ -20,24 +24,37 @@ public class BoothServiceImpl implements BoothService{
 
     private final BoothRepository boothrepository;
     private final CommentService commentService;
+    private final UserBoothService userBoothService;
+    private final UserService userService;
+
     @Override
-    public AllBooth getAllbooth() {
+    public AllBooth getAllbooth(String userHash) {
 
         List<BoothEntity> boothes = boothrepository.findAll();
         List<Booth> boothDtos;
-        AllBooth result;
+
+        List<UserBoothEntity> userBoothEntityList = userBoothService.getAllUserBooth(
+                userService.getUserByHash(userHash).getId());
 
         if(boothes.isEmpty()) {
             throw new NoExistException("부스 전체 정보가 없습니다.");
         }else{
             boothDtos = new ArrayList<>();
             for(BoothEntity booth : boothes){
-
                 boothDtos.add(Booth.builder()
-                                .id(booth.getId().intValue())
+                                .id(booth.getId())
+                                .boothName(booth.getBoothName())
                                 .likes(booth.getLikes())
+                                .Likable(true)
                         .build());
             }
+
+            for(UserBoothEntity userBooth : userBoothEntityList){
+                Booth tempbooth = boothDtos.get(userBooth.getBoothEntity().getId().intValue());
+                tempbooth.setLikable(false);
+                boothDtos.set(userBooth.getBoothEntity().getId().intValue(), tempbooth);
+            }
+
             return AllBooth.builder()
                     .count(boothDtos.size())
                     .boothDtoes(boothDtos)
@@ -46,25 +63,33 @@ public AllBooth getAllbooth() {
     }
 
     @Override
-    public BoothDetail getBooth(int id) {
-        Optional<BoothEntity> boothOp = boothrepository.findById(Long.valueOf(id));
+    public BoothDetail getBooth(Long id, String userHash) {
+        Optional<BoothEntity> boothOp = boothrepository.findById(id);
+
+        Optional<UserBoothEntity> userBoothEntity = userBoothService.getUserBooth(id, userService.getUserByHash(userHash).getId());
+
+        boolean temp = userBoothEntity.isEmpty();
 
         if(boothOp.isEmpty()){
             throw new NoExistException("해당 부스 정보가 없습니다. (id 확인요망)");
         }else{
             BoothEntity booth = boothOp.get();
+
             return BoothDetail.builder()
-                    .id(booth.getId().intValue())
+                    .id(booth.getId())
+                    .boothName(booth.getBoothName())
                     .likes(booth.getLikes())
-                    .comments(commentService.getCommentPage(boothOp.get().getId().intValue(),5,1, "default"))
+                    .urls(booth.getUrls())
+                    .Likable(temp)
+                    .comments(commentService.getCommentPage(boothOp.get().getId(),5,1, "default"))
                     .build();
         }
     }
 
     @Override
-    public void updateLikes(int id) {
+    public void updateLikes(Long id) {
 
-        Optional<BoothEntity> boothOp = boothrepository.findById(Long.valueOf(id));
+        Optional<BoothEntity> boothOp = boothrepository.findById(id);
         BoothEntity booth;
 
         if(boothOp.isEmpty()){
diff --git a/src/main/java/LlikelionKNU/KNUfest/domain/comment/controller/CommentController.java b/src/main/java/LlikelionKNU/KNUfest/domain/comment/controller/CommentController.java
index e6858be..d4782bb 100644
--- a/src/main/java/LlikelionKNU/KNUfest/domain/comment/controller/CommentController.java
+++ b/src/main/java/LlikelionKNU/KNUfest/domain/comment/controller/CommentController.java
@@ -20,7 +20,7 @@ public class CommentController {
     @GetMapping("booth/{boothId}/comment")
     @Operation(summary = "추가 댓글 조회", description = "해당 부스의 추가 댓글내용을 제공한다. perpage = 요청당 댓글 개수 한 페이지 당 통일되게 보내야 됨, page = 요청 댓글 set 순번. order = 댓글 정렬순서 최신순은 'desc' 오래된 순은 'default' 이다. ")
     public ResponseEntity<List<Comment>> getExtraCommentPage(
-            @PathVariable("boothId") int boothId,
+            @PathVariable("boothId") Long boothId,
             @RequestParam("perpage") int perpage,
             @RequestParam("page") int page,
             @RequestParam("order") String order
@@ -32,11 +32,11 @@ public ResponseEntity<List<Comment>> getExtraCommentPage(
     @PostMapping("booth/{boothId}/comment")
     @Operation(summary = "특정부스 댓글 생성", description = "특정 부스에 댓글을 생성한다.")
     public ResponseEntity<BasicResponse> postComment(
-            @PathVariable("boothId") int boothId,
+            @PathVariable("boothId") Long boothId,
             @RequestBody CommentRequest comment
     ){
 
-        int id = service.postComment(boothId, comment);
+        Long id = service.postComment(boothId, comment);
 
         BasicResponse response = BasicResponse.builder()
                 .message(boothId+"번 부스에 댓글을 생성하였습니다.")
@@ -49,7 +49,7 @@ public ResponseEntity<BasicResponse> postComment(
     @DeleteMapping("comment/{commentId}")
     @Operation(summary = "특정 댓글 삭제", description = "특정 댓글을 password 가 일치할 경우 삭제한다.")
     public ResponseEntity<BasicResponse> deleteComment(
-            @PathVariable("commentId") int commentId,
+            @PathVariable("commentId") Long commentId,
             @RequestParam("password") String password
     ){
 
diff --git a/src/main/java/LlikelionKNU/KNUfest/domain/comment/dto/Comment.java b/src/main/java/LlikelionKNU/KNUfest/domain/comment/dto/Comment.java
index 29a0544..0ead98a 100644
--- a/src/main/java/LlikelionKNU/KNUfest/domain/comment/dto/Comment.java
+++ b/src/main/java/LlikelionKNU/KNUfest/domain/comment/dto/Comment.java
@@ -10,7 +10,7 @@
 @Data
 @Builder
 public class Comment {
-    int id;
+    Long id;
     String name;
     String comment;
     String password;
diff --git a/src/main/java/LlikelionKNU/KNUfest/domain/comment/entity/CommentEntity.java b/src/main/java/LlikelionKNU/KNUfest/domain/comment/entity/CommentEntity.java
index 98b0165..884d1e1 100644
--- a/src/main/java/LlikelionKNU/KNUfest/domain/comment/entity/CommentEntity.java
+++ b/src/main/java/LlikelionKNU/KNUfest/domain/comment/entity/CommentEntity.java
@@ -32,7 +32,7 @@ public class CommentEntity extends BasicEntity {
 
     public Comment toDto(){
         return Comment.builder()
-                .id(this.getId().intValue())
+                .id(this.getId())
                 .name(this.name)
                 .password(this.password)
                 .comment(this.comment)
diff --git a/src/main/java/LlikelionKNU/KNUfest/domain/comment/repository/CommentRepository.java b/src/main/java/LlikelionKNU/KNUfest/domain/comment/repository/CommentRepository.java
index 2802632..8acb46a 100644
--- a/src/main/java/LlikelionKNU/KNUfest/domain/comment/repository/CommentRepository.java
+++ b/src/main/java/LlikelionKNU/KNUfest/domain/comment/repository/CommentRepository.java
@@ -14,8 +14,8 @@ public interface CommentRepository extends JpaRepository<CommentEntity, Long> {
 
     @Query(value = "select * from booth_comment where booth_id= :boothId order by id limit :lim offset :offset",
             nativeQuery = true)
-    List<CommentEntity> findAllOrderById(@Param("boothId") int boothId, @Param("lim") int limit, @Param("offset") int offset);
+    List<CommentEntity> findAllOrderById(@Param("boothId") Long boothId, @Param("lim") int limit, @Param("offset") int offset);
     @Query(value = "select * from booth_comment where booth_id= :boothId order by id desc limit :lim offset :off",
             nativeQuery = true)
-    List<CommentEntity> findAllOrderByIdDESC(@Param("boothId") int boothId, @Param("lim") int limit, @Param("off") int offset);
+    List<CommentEntity> findAllOrderByIdDESC(@Param("boothId") Long boothId, @Param("lim") int limit, @Param("off") int offset);
 }
diff --git a/src/main/java/LlikelionKNU/KNUfest/domain/comment/service/CommentService.java b/src/main/java/LlikelionKNU/KNUfest/domain/comment/service/CommentService.java
index 8d4e1f9..e112c3f 100644
--- a/src/main/java/LlikelionKNU/KNUfest/domain/comment/service/CommentService.java
+++ b/src/main/java/LlikelionKNU/KNUfest/domain/comment/service/CommentService.java
@@ -6,8 +6,8 @@
 import java.util.List;
 
 public interface CommentService {
-    List<Comment> getCommentPage(int boothId, int perpage, int page, String order);
-    int postComment(int id, CommentRequest comment);
-    void deleteComment(int commentId, String password);
+    List<Comment> getCommentPage(Long boothId, int perpage, int page, String order);
+    Long postComment(Long id, CommentRequest comment);
+    void deleteComment(Long commentId, String password);
 
 }
diff --git a/src/main/java/LlikelionKNU/KNUfest/domain/comment/service/CommentServiceImpl.java b/src/main/java/LlikelionKNU/KNUfest/domain/comment/service/CommentServiceImpl.java
index eb5437c..3dbbd2b 100644
--- a/src/main/java/LlikelionKNU/KNUfest/domain/comment/service/CommentServiceImpl.java
+++ b/src/main/java/LlikelionKNU/KNUfest/domain/comment/service/CommentServiceImpl.java
@@ -21,9 +21,9 @@ public class CommentServiceImpl implements CommentService{
     private final CommentRepository commentRepository;
     private final BoothRepository boothRepository;
     @Override
-    public List<Comment> getCommentPage(int boothId, int perpage, int page, String order) {
+    public List<Comment> getCommentPage(Long boothId, int perpage, int page, String order) {
 
-        Optional<BoothEntity> boothOp =  boothRepository.findById(Long.valueOf(boothId));
+        Optional<BoothEntity> boothOp =  boothRepository.findById(boothId);
         List<CommentEntity> comments;
         List<Comment> result;
 
@@ -47,9 +47,9 @@ public List<Comment> getCommentPage(int boothId, int perpage, int page, String o
     }
 
     @Override
-    public int postComment(int boothId, CommentRequest commentRequest) {
+    public Long postComment(Long boothId, CommentRequest commentRequest) {
 
-        Optional<BoothEntity> boothOp =  boothRepository.findById(Long.valueOf(boothId));
+        Optional<BoothEntity> boothOp =  boothRepository.findById(boothId);
 
         Comment comment = Comment.builder()
                 .name(commentRequest.getName())
@@ -62,13 +62,13 @@ public int postComment(int boothId, CommentRequest commentRequest) {
         }else{
             CommentEntity newComment = comment.toEntity(boothOp.get());
             commentRepository.save(newComment);
-            return newComment.getId().intValue();
+            return newComment.getId();
         }
     }
 
     @Override
-    public void deleteComment(int commentId, String password) {
-        Optional<CommentEntity> commentOp = commentRepository.findById(Long.valueOf(commentId));
+    public void deleteComment(Long commentId, String password) {
+        Optional<CommentEntity> commentOp = commentRepository.findById(commentId);
 
         if(commentOp.isEmpty()) {
             throw new NoExistException("해당 댓글은 없습니다. (id 확인 요망)");
diff --git a/src/main/java/LlikelionKNU/KNUfest/domain/user/entity/UserBoothEntity.java b/src/main/java/LlikelionKNU/KNUfest/domain/user/entity/UserBoothEntity.java
new file mode 100644
index 0000000..813dcf6
--- /dev/null
+++ b/src/main/java/LlikelionKNU/KNUfest/domain/user/entity/UserBoothEntity.java
@@ -0,0 +1,29 @@
+package LlikelionKNU.KNUfest.domain.user.entity;
+
+import LlikelionKNU.KNUfest.domain.booth.entity.BoothEntity;
+import LlikelionKNU.KNUfest.global.basic.BasicEntity;
+import jakarta.persistence.Entity;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@Builder
+@Entity
+@NoArgsConstructor
+@AllArgsConstructor
+public class UserBoothEntity extends BasicEntity {
+
+    @ManyToOne(fetch = FetchType.EAGER)
+    @JoinColumn(name = "userId")
+    private UserEntity userEntity;
+
+    @ManyToOne(fetch = FetchType.EAGER)
+    @JoinColumn(name = "boothId")
+    private BoothEntity boothEntity;
+
+}
diff --git a/src/main/java/LlikelionKNU/KNUfest/domain/user/entity/UserEntity.java b/src/main/java/LlikelionKNU/KNUfest/domain/user/entity/UserEntity.java
new file mode 100644
index 0000000..560bd99
--- /dev/null
+++ b/src/main/java/LlikelionKNU/KNUfest/domain/user/entity/UserEntity.java
@@ -0,0 +1,23 @@
+package LlikelionKNU.KNUfest.domain.user.entity;
+
+
+import LlikelionKNU.KNUfest.global.basic.BasicEntity;
+import jakarta.persistence.*;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+@Builder
+@Entity
+public class UserEntity extends BasicEntity {
+
+    @Column(name = "userHash")
+    private String userHash;
+
+    @OneToMany(mappedBy = "userEntity", fetch = FetchType.LAZY, cascade = CascadeType.ALL)
+    private UserBoothEntity userBooth;
+}
diff --git a/src/main/java/LlikelionKNU/KNUfest/domain/user/repository/UserBoothRepository.java b/src/main/java/LlikelionKNU/KNUfest/domain/user/repository/UserBoothRepository.java
new file mode 100644
index 0000000..3495734
--- /dev/null
+++ b/src/main/java/LlikelionKNU/KNUfest/domain/user/repository/UserBoothRepository.java
@@ -0,0 +1,19 @@
+package LlikelionKNU.KNUfest.domain.user.repository;
+
+import LlikelionKNU.KNUfest.domain.booth.entity.BoothEntity;
+import LlikelionKNU.KNUfest.domain.user.entity.UserBoothEntity;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+import java.util.Optional;
+
+@Repository
+public interface UserBoothRepository extends JpaRepository<UserBoothEntity, Long> {
+
+    List<UserBoothEntity> findAllByUserId(Long userId);
+
+    Optional<UserBoothEntity> findByUserIdAndBoothId(Long userId, Long BoothId);
+}
diff --git a/src/main/java/LlikelionKNU/KNUfest/domain/user/repository/UserRepository.java b/src/main/java/LlikelionKNU/KNUfest/domain/user/repository/UserRepository.java
new file mode 100644
index 0000000..4946550
--- /dev/null
+++ b/src/main/java/LlikelionKNU/KNUfest/domain/user/repository/UserRepository.java
@@ -0,0 +1,12 @@
+package LlikelionKNU.KNUfest.domain.user.repository;
+
+import LlikelionKNU.KNUfest.domain.user.entity.UserEntity;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+import java.util.Optional;
+
+@Repository
+public interface UserRepository extends JpaRepository<UserEntity, Long> {
+    Optional<UserEntity> findByUserHash(String userHash);
+}
diff --git a/src/main/java/LlikelionKNU/KNUfest/domain/user/service/UserBoothService.java b/src/main/java/LlikelionKNU/KNUfest/domain/user/service/UserBoothService.java
new file mode 100644
index 0000000..2ddac37
--- /dev/null
+++ b/src/main/java/LlikelionKNU/KNUfest/domain/user/service/UserBoothService.java
@@ -0,0 +1,13 @@
+package LlikelionKNU.KNUfest.domain.user.service;
+
+
+import LlikelionKNU.KNUfest.domain.booth.dto.Booth;
+import LlikelionKNU.KNUfest.domain.user.entity.UserBoothEntity;
+
+import java.util.List;
+import java.util.Optional;
+
+public interface UserBoothService {
+    List<UserBoothEntity> getAllUserBooth(Long userId);
+    Optional<UserBoothEntity> getUserBooth(Long userId, Long boothId);
+}
diff --git a/src/main/java/LlikelionKNU/KNUfest/domain/user/service/UserBoothServiceImpl.java b/src/main/java/LlikelionKNU/KNUfest/domain/user/service/UserBoothServiceImpl.java
new file mode 100644
index 0000000..70dd05d
--- /dev/null
+++ b/src/main/java/LlikelionKNU/KNUfest/domain/user/service/UserBoothServiceImpl.java
@@ -0,0 +1,29 @@
+package LlikelionKNU.KNUfest.domain.user.service;
+
+import LlikelionKNU.KNUfest.domain.booth.dto.Booth;
+import LlikelionKNU.KNUfest.domain.user.entity.UserBoothEntity;
+import LlikelionKNU.KNUfest.domain.user.repository.UserBoothRepository;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+import java.util.Optional;
+
+@Service
+@RequiredArgsConstructor
+public class UserBoothServiceImpl implements UserBoothService{
+
+    private final UserBoothRepository userBoothRepository;
+
+    @Override
+    public List<UserBoothEntity> getAllUserBooth(Long userId) {
+        return userBoothRepository.findAllByUserId(userId);
+    }
+
+    @Override
+    public Optional<UserBoothEntity> getUserBooth(Long userId, Long boothId) {
+        return userBoothRepository.findByUserIdAndBoothId(userId, boothId);
+    }
+
+
+}
diff --git a/src/main/java/LlikelionKNU/KNUfest/domain/user/service/UserService.java b/src/main/java/LlikelionKNU/KNUfest/domain/user/service/UserService.java
new file mode 100644
index 0000000..8273032
--- /dev/null
+++ b/src/main/java/LlikelionKNU/KNUfest/domain/user/service/UserService.java
@@ -0,0 +1,9 @@
+package LlikelionKNU.KNUfest.domain.user.service;
+
+import LlikelionKNU.KNUfest.domain.user.entity.UserEntity;
+import org.springframework.stereotype.Service;
+
+
+public interface UserService {
+    UserEntity getUserByHash(String userHash);
+}
diff --git a/src/main/java/LlikelionKNU/KNUfest/domain/user/service/UserServiceImpl.java b/src/main/java/LlikelionKNU/KNUfest/domain/user/service/UserServiceImpl.java
new file mode 100644
index 0000000..23cd017
--- /dev/null
+++ b/src/main/java/LlikelionKNU/KNUfest/domain/user/service/UserServiceImpl.java
@@ -0,0 +1,34 @@
+package LlikelionKNU.KNUfest.domain.user.service;
+
+import LlikelionKNU.KNUfest.domain.user.entity.UserEntity;
+import LlikelionKNU.KNUfest.domain.user.repository.UserRepository;
+import LlikelionKNU.KNUfest.global.error.NoExistException;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+
+import java.util.Optional;
+
+@Service
+@RequiredArgsConstructor
+public class UserServiceImpl implements UserService{
+    private final UserRepository userRepository;
+
+
+    @Override
+    public UserEntity getUserByHash(String userHash) {
+
+        Optional<UserEntity> userEntity = userRepository.findByUserHash(userHash);
+        UserEntity newUser;
+        if(userEntity.isEmpty()){
+            newUser = UserEntity.builder()
+                    .userHash(userHash).build();
+            userRepository.save(newUser);
+
+            return newUser;
+        }
+        else{
+            return userEntity.get();
+        }
+
+    }
+}