diff --git a/src/main/java/org/prgms/springbootjpa/mission3/domain/BaseEntity.java b/src/main/java/org/prgms/springbootjpa/mission3/domain/BaseEntity.java
new file mode 100644
index 000000000..0b609f37d
--- /dev/null
+++ b/src/main/java/org/prgms/springbootjpa/mission3/domain/BaseEntity.java
@@ -0,0 +1,12 @@
+package org.prgms.springbootjpa.mission3.domain;
+
+import javax.persistence.MappedSuperclass;
+import java.time.LocalDateTime;
+
+@MappedSuperclass
+public class BaseEntity {
+
+    private LocalDateTime createdAt = LocalDateTime.now();
+
+    private LocalDateTime updatedAt = LocalDateTime.now();
+}
diff --git a/src/main/java/org/prgms/springbootjpa/mission3/domain/Member.java b/src/main/java/org/prgms/springbootjpa/mission3/domain/Member.java
new file mode 100644
index 000000000..790b3d399
--- /dev/null
+++ b/src/main/java/org/prgms/springbootjpa/mission3/domain/Member.java
@@ -0,0 +1,47 @@
+package org.prgms.springbootjpa.mission3.domain;
+
+import lombok.AccessLevel;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import org.prgms.springbootjpa.mission3.domain.BaseEntity;
+import org.prgms.springbootjpa.mission3.domain.order.Order;
+
+import javax.persistence.*;
+import java.util.ArrayList;
+import java.util.List;
+
+@Entity
+@Getter
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class Member extends BaseEntity {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @Column(length = 12, nullable = false)
+    private String name;
+
+    @Column(length = 12, nullable = false, unique = true)
+    private String nickname;
+
+    private int age;
+
+    @Column(length = 50, nullable = false)
+    private String address;
+
+    @OneToMany(mappedBy = "member", orphanRemoval = true)
+    private List<Order> orders = new ArrayList<>();
+
+    public Member(String name, String nickname, int age, String address) {
+        this.name = name;
+        this.nickname = nickname;
+        this.age = age;
+        this.address = address;
+    }
+
+    public void addOrder(Order order) {
+        order.setMember(this);
+        orders.add(order);
+    }
+}
diff --git a/src/main/java/org/prgms/springbootjpa/mission3/domain/MemberRepository.java b/src/main/java/org/prgms/springbootjpa/mission3/domain/MemberRepository.java
new file mode 100644
index 000000000..8dbb6a409
--- /dev/null
+++ b/src/main/java/org/prgms/springbootjpa/mission3/domain/MemberRepository.java
@@ -0,0 +1,6 @@
+package org.prgms.springbootjpa.mission3.domain;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface MemberRepository extends JpaRepository<Member, Long> {
+}
diff --git a/src/main/java/org/prgms/springbootjpa/mission3/domain/order/Item.java b/src/main/java/org/prgms/springbootjpa/mission3/domain/order/Item.java
new file mode 100644
index 000000000..4f4520496
--- /dev/null
+++ b/src/main/java/org/prgms/springbootjpa/mission3/domain/order/Item.java
@@ -0,0 +1,36 @@
+package org.prgms.springbootjpa.mission3.domain.order;
+
+import lombok.AccessLevel;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+import javax.persistence.*;
+import java.util.ArrayList;
+import java.util.List;
+
+@Entity
+@Getter
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class Item {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    private int price;
+
+    private int stockQuantity;
+
+    @OneToMany(mappedBy = "item", orphanRemoval = true)
+    private List<OrderItem> orderItems = new ArrayList<>();
+
+    public Item(int price, int stockQuantity) {
+        this.price = price;
+        this.stockQuantity = stockQuantity;
+    }
+
+    public void addOrderItem(OrderItem orderItem) {
+        orderItem.setItem(this);
+        orderItems.add(orderItem);
+    }
+}
diff --git a/src/main/java/org/prgms/springbootjpa/mission3/domain/order/ItemRepository.java b/src/main/java/org/prgms/springbootjpa/mission3/domain/order/ItemRepository.java
new file mode 100644
index 000000000..fb8e09c1f
--- /dev/null
+++ b/src/main/java/org/prgms/springbootjpa/mission3/domain/order/ItemRepository.java
@@ -0,0 +1,6 @@
+package org.prgms.springbootjpa.mission3.domain.order;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface ItemRepository extends JpaRepository<Item, Long> {
+}
diff --git a/src/main/java/org/prgms/springbootjpa/mission3/domain/order/Order.java b/src/main/java/org/prgms/springbootjpa/mission3/domain/order/Order.java
new file mode 100644
index 000000000..df334d5fd
--- /dev/null
+++ b/src/main/java/org/prgms/springbootjpa/mission3/domain/order/Order.java
@@ -0,0 +1,47 @@
+package org.prgms.springbootjpa.mission3.domain.order;
+
+import lombok.AccessLevel;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import org.prgms.springbootjpa.mission3.domain.BaseEntity;
+import org.prgms.springbootjpa.mission3.domain.Member;
+
+import javax.persistence.*;
+import java.util.ArrayList;
+import java.util.List;
+
+@Entity
+@Getter
+@Table(name = "orders")
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class Order extends BaseEntity {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    private OrderStatus orderStatus;
+
+    private String memo;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "member_id")
+    private Member member;
+
+    @OneToMany(mappedBy = "order", cascade = CascadeType.PERSIST, orphanRemoval = true)
+    private List<OrderItem> orderItems = new ArrayList<>();
+
+    public Order(OrderStatus orderStatus, String memo) {
+        this.orderStatus = orderStatus;
+        this.memo = memo;
+    }
+
+    public void addOrderItem(OrderItem orderItem) {
+        orderItem.setOrder(this);
+        orderItems.add(orderItem);
+    }
+
+    public void setMember(Member member) {
+        this.member = member;
+    }
+}
diff --git a/src/main/java/org/prgms/springbootjpa/mission3/domain/order/OrderItem.java b/src/main/java/org/prgms/springbootjpa/mission3/domain/order/OrderItem.java
new file mode 100644
index 000000000..08f06bdcf
--- /dev/null
+++ b/src/main/java/org/prgms/springbootjpa/mission3/domain/order/OrderItem.java
@@ -0,0 +1,42 @@
+package org.prgms.springbootjpa.mission3.domain.order;
+
+import lombok.AccessLevel;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+import javax.persistence.*;
+
+@Entity
+@Getter
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class OrderItem {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    private int price;
+
+    private int quantity;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "order_id")
+    private Order order;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "item_id")
+    private Item item;
+
+    public OrderItem(int price, int quantity) {
+        this.price = price;
+        this.quantity = quantity;
+    }
+
+    public void setOrder(Order order) {
+        this.order = order;
+    }
+
+    public void setItem(Item item) {
+        this.item = item;
+    }
+}
diff --git a/src/main/java/org/prgms/springbootjpa/mission3/domain/order/OrderItemRepository.java b/src/main/java/org/prgms/springbootjpa/mission3/domain/order/OrderItemRepository.java
new file mode 100644
index 000000000..da02bc569
--- /dev/null
+++ b/src/main/java/org/prgms/springbootjpa/mission3/domain/order/OrderItemRepository.java
@@ -0,0 +1,6 @@
+package org.prgms.springbootjpa.mission3.domain.order;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface OrderItemRepository extends JpaRepository<OrderItem, Long> {
+}
diff --git a/src/main/java/org/prgms/springbootjpa/mission3/domain/order/OrderRepository.java b/src/main/java/org/prgms/springbootjpa/mission3/domain/order/OrderRepository.java
new file mode 100644
index 000000000..f205e6ff9
--- /dev/null
+++ b/src/main/java/org/prgms/springbootjpa/mission3/domain/order/OrderRepository.java
@@ -0,0 +1,6 @@
+package org.prgms.springbootjpa.mission3.domain.order;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface OrderRepository extends JpaRepository<Order, Long> {
+}
diff --git a/src/main/java/org/prgms/springbootjpa/mission3/domain/order/OrderStatus.java b/src/main/java/org/prgms/springbootjpa/mission3/domain/order/OrderStatus.java
new file mode 100644
index 000000000..593753d6b
--- /dev/null
+++ b/src/main/java/org/prgms/springbootjpa/mission3/domain/order/OrderStatus.java
@@ -0,0 +1,5 @@
+package org.prgms.springbootjpa.mission3.domain.order;
+
+public enum OrderStatus {
+    CREATED, PROCESSING, SHIPPED, DELIVERED
+}
diff --git a/src/test/java/org/prgms/springbootjpa/mission3/domain/OrderDomainTest.java b/src/test/java/org/prgms/springbootjpa/mission3/domain/OrderDomainTest.java
new file mode 100644
index 000000000..1b42a32f5
--- /dev/null
+++ b/src/test/java/org/prgms/springbootjpa/mission3/domain/OrderDomainTest.java
@@ -0,0 +1,142 @@
+package org.prgms.springbootjpa.mission3.domain;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.prgms.springbootjpa.mission3.domain.order.*;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+
+import java.util.List;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.*;
+import static org.prgms.springbootjpa.mission3.domain.order.OrderStatus.CREATED;
+
+@SpringBootTest
+class OrderDomainTest {
+
+    @Autowired
+    OrderRepository orderRepository;
+
+    @Autowired
+    OrderItemRepository orderItemRepository;
+
+    @Autowired
+    MemberRepository memberRepository;
+
+    @Autowired
+    ItemRepository itemRepository;
+
+    Member member = new Member("현지", "딩딩", 25, "서울시 마포구");
+    Order order = new Order(CREATED, "집 앞 배송");
+    Item item = new Item(1000, 100);
+    OrderItem orderItem = new OrderItem(10000, 2);
+
+    @BeforeEach
+    void setUp() {
+        itemRepository.deleteAll();
+        orderRepository.deleteAll();
+        orderItemRepository.deleteAll();
+        memberRepository.deleteAll();
+    }
+
+    @Test
+    void 멤버_생성() {
+        Member saveMember = memberRepository.save(member);
+
+        List<Member> members = memberRepository.findAll();
+
+        assertThat(members.size(), is(1));
+        assertThat(saveMember.getId(), notNullValue());
+    }
+
+    @Test
+    void 아이템_생성() {
+        Item saveItem = itemRepository.save(item);
+
+        List<Item> items = itemRepository.findAll();
+
+        assertThat(items.size(), is(1));
+        assertThat(saveItem.getId(), notNullValue());
+    }
+
+    @Test
+    void 아이템_주문아이템_생성() {
+        itemRepository.save(item);
+
+        item.addOrderItem(orderItem);
+
+        orderItemRepository.save(orderItem);
+
+        List<OrderItem> orderItems = item.getOrderItems();
+
+        assertThat(item.getId(), notNullValue());
+        assertThat(orderItems.size(), is(1));
+        assertThat(orderItems.get(0), samePropertyValuesAs(orderItem));
+
+        assertThat(orderItem.getId(), notNullValue());
+        assertThat(orderItem.getItem(), samePropertyValuesAs(item));
+    }
+
+    @Test
+    void 주문_주문아이템_생성() {
+        order.addOrderItem(orderItem);
+        orderRepository.save(order);
+
+        List<OrderItem> orderItems = order.getOrderItems();
+
+        assertThat(order.getId(), notNullValue());
+        assertThat(orderItems.size(), is(1));
+        assertThat(orderItems.get(0), samePropertyValuesAs(orderItem));
+
+        assertThat(orderItem.getId(), notNullValue());
+        assertThat(orderItem.getOrder(), samePropertyValuesAs(order));
+    }
+
+    @Test
+    void 멤버_주문_생성() {
+        memberRepository.save(member);
+
+        member.addOrder(order);
+
+        orderRepository.save(order);
+
+        List<Order> orders = member.getOrders();
+
+        assertThat(member.getId(), notNullValue());
+        assertThat(orders.size(), is(1));
+        assertThat(orders.get(0), samePropertyValuesAs(order));
+
+        assertThat(order.getId(), notNullValue());
+        assertThat(order.getMember(), samePropertyValuesAs(member));
+    }
+
+    @Test
+    void 주문_도메인_테스트() {
+        memberRepository.save(member);
+        itemRepository.save(item);
+
+        item.addOrderItem(orderItem);
+        order.addOrderItem(orderItem);
+        member.addOrder(order);
+
+        orderRepository.save(order);
+
+        assertThat(member.getId(), notNullValue());
+        assertThat(member.getOrders().size(), is(1));
+        assertThat(member.getOrders().get(0), samePropertyValuesAs(order));
+
+        assertThat(order.getId(), notNullValue());
+        assertThat(order.getMember(), samePropertyValuesAs(member));
+        assertThat(order.getOrderItems().size(), is(1));
+        assertThat(order.getOrderItems().get(0), samePropertyValuesAs(orderItem));
+
+        assertThat(item.getId(), notNullValue());
+        assertThat(item.getOrderItems().size(), is(1));
+        assertThat(item.getOrderItems().get(0), samePropertyValuesAs(orderItem));
+
+        assertThat(orderItem.getId(), notNullValue());
+        assertThat(orderItem.getItem(), samePropertyValuesAs(item));
+        assertThat(orderItem.getOrder(), samePropertyValuesAs(order));
+    }
+}