diff --git a/build.gradle b/build.gradle
index 539c12b0..954ba70f 100644
--- a/build.gradle
+++ b/build.gradle
@@ -33,6 +33,7 @@ dependencies {
 	testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
 	implementation 'org.springframework.boot:spring-boot-starter-data-jpa' // JPA 스타터 추가
 	runtimeOnly 'com.h2database:h2'		// test용 db인 h2Database 추가
+	implementation 'com.github.gavlyukovskiy:p6spy-spring-boot-starter:1.9.0'		// p6spy 설정 추가
 }
 
 tasks.named('test') {
diff --git a/src/main/java/space/space_spring/controller/UserController.java b/src/main/java/space/space_spring/controller/UserController.java
index 6eb8c4c3..8921a751 100644
--- a/src/main/java/space/space_spring/controller/UserController.java
+++ b/src/main/java/space/space_spring/controller/UserController.java
@@ -4,8 +4,11 @@
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
+import space.space_spring.dto.PostUserRequest;
+import space.space_spring.dto.PostUserResponse;
 import space.space_spring.response.BaseResponse;
 import space.space_spring.service.UserService;
 
@@ -20,6 +23,9 @@ public class UserController {
     /**
      * 회원가입
      */
-//    @PostMapping("/signup")
+    @PostMapping("/signup")
+    public BaseResponse<PostUserResponse> signup(@RequestBody PostUserRequest postUserRequest) {
+        return new BaseResponse<>(userService.signup(postUserRequest));
+    }
 
 }
diff --git a/src/main/java/space/space_spring/dao/UserDao.java b/src/main/java/space/space_spring/dao/UserDao.java
index 4fb92c9a..4fdee3ba 100644
--- a/src/main/java/space/space_spring/dao/UserDao.java
+++ b/src/main/java/space/space_spring/dao/UserDao.java
@@ -1,9 +1,24 @@
 package space.space_spring.dao;
 
+import jakarta.persistence.EntityManager;
+import jakarta.persistence.PersistenceContext;
 import org.springframework.stereotype.Repository;
+import org.springframework.transaction.annotation.Transactional;
+import space.space_spring.domain.User;
+import space.space_spring.dto.PostUserRequest;
 
 @Repository
+@Transactional
 public class UserDao {
 
+    @PersistenceContext
+    private EntityManager em;
 
+    public Long saveUser(PostUserRequest postUserRequest) {
+        User user = new User();
+        user.saveUser(postUserRequest.getEmail(), postUserRequest.getPassword(), postUserRequest.getUserName());
+
+        em.persist(user);
+        return user.getUserId();
+    }
 }
diff --git a/src/main/java/space/space_spring/domain/Space.java b/src/main/java/space/space_spring/domain/Space.java
new file mode 100644
index 00000000..0a5c5ea0
--- /dev/null
+++ b/src/main/java/space/space_spring/domain/Space.java
@@ -0,0 +1,22 @@
+package space.space_spring.domain;
+
+import jakarta.annotation.Nullable;
+import jakarta.persistence.*;
+import lombok.Getter;
+
+@Entity
+@Getter
+@Table(name = "Spaces")
+public class Space extends BaseEntity {
+
+    @Id @GeneratedValue
+    @Column(name = "space_id")
+    private Long spaceId;
+
+    @Column(name = "space_name")
+    private String spaceName;
+
+    @Column(name = "space_profile_img")
+    @Nullable
+    private String spaceProfileImg;
+}
diff --git a/src/main/java/space/space_spring/domain/User.java b/src/main/java/space/space_spring/domain/User.java
index a9bf96a1..c742e92d 100644
--- a/src/main/java/space/space_spring/domain/User.java
+++ b/src/main/java/space/space_spring/domain/User.java
@@ -1,14 +1,17 @@
 package space.space_spring.domain;
 
+import jakarta.annotation.Nullable;
 import jakarta.persistence.*;
+import lombok.Getter;
 
 @Entity
 @Table(name = "Users")
+@Getter
 public class User extends BaseEntity {
 
     @Id @GeneratedValue
     @Column(name = "user_id")
-    private Long id;
+    private Long userId;
 
     @Column(name = "email")
     private String email;
@@ -20,6 +23,13 @@ public class User extends BaseEntity {
     private String userName;
 
     @Column(name = "jwt_token")
+    @Nullable
     private String jwt;
 
+    public void saveUser(String email, String password, String userName) {
+        this.email = email;
+        this.password = password;
+        this.userName = userName;
+    }
+
 }
diff --git a/src/main/java/space/space_spring/domain/UserSpace.java b/src/main/java/space/space_spring/domain/UserSpace.java
new file mode 100644
index 00000000..5d44ee9b
--- /dev/null
+++ b/src/main/java/space/space_spring/domain/UserSpace.java
@@ -0,0 +1,42 @@
+package space.space_spring.domain;
+
+import jakarta.annotation.Nullable;
+import jakarta.persistence.*;
+import lombok.Getter;
+
+@Entity
+@Getter
+@Table(name = "User_Space")
+public class UserSpace extends BaseEntity {
+
+    @Id @GeneratedValue
+    @Column(name = "user_space_id")
+    private Long userSpaceId;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "user_id")
+    private User user;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "space_id")
+    private Space space;
+
+    @Column(name = "user_name")
+    private String userName;
+
+    @Column(name = "user_profile_img")
+    @Nullable
+    private String userProfileImg;
+
+    @Column(name = "user_profile_msg")
+    @Nullable
+    private String userProfileMsg;
+
+    @Column(name = "user_auth")
+    private String userAuth;
+
+    @Column(name = "space_order")
+    private int spaceOrder;
+
+
+}
diff --git a/src/main/java/space/space_spring/dto/PostUserRequest.java b/src/main/java/space/space_spring/dto/PostUserRequest.java
index 0c87e3cd..63d9a3f2 100644
--- a/src/main/java/space/space_spring/dto/PostUserRequest.java
+++ b/src/main/java/space/space_spring/dto/PostUserRequest.java
@@ -4,9 +4,12 @@
 import lombok.NoArgsConstructor;
 import lombok.Setter;
 
-@Getter @Setter @NoArgsConstructor
+@Getter
+@Setter
+@NoArgsConstructor
 public class PostUserRequest {
 
     private String email;
     private String password;
+    private String userName;
 }
diff --git a/src/main/java/space/space_spring/dto/PostUserResponse.java b/src/main/java/space/space_spring/dto/PostUserResponse.java
new file mode 100644
index 00000000..44eb73d6
--- /dev/null
+++ b/src/main/java/space/space_spring/dto/PostUserResponse.java
@@ -0,0 +1,12 @@
+package space.space_spring.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@Getter
+@AllArgsConstructor
+public class PostUserResponse {
+
+    private Long userId;
+//    private String jwt;
+}
diff --git a/src/main/java/space/space_spring/service/UserService.java b/src/main/java/space/space_spring/service/UserService.java
index 14159a31..911b2b59 100644
--- a/src/main/java/space/space_spring/service/UserService.java
+++ b/src/main/java/space/space_spring/service/UserService.java
@@ -3,10 +3,17 @@
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
 import space.space_spring.dao.UserDao;
+import space.space_spring.dto.PostUserRequest;
+import space.space_spring.dto.PostUserResponse;
 
 @Service
 @RequiredArgsConstructor
 public class UserService {
 
     private final UserDao userDao;
+
+    public PostUserResponse signup(PostUserRequest postUserRequest) {
+        Long savedUserId = userDao.saveUser(postUserRequest);
+        return new PostUserResponse(savedUserId);
+    }
 }