diff --git a/src/main/java/friend/spring/domain/Category.java b/src/main/java/friend/spring/domain/Category.java
new file mode 100644
index 0000000..b08d7dd
--- /dev/null
+++ b/src/main/java/friend/spring/domain/Category.java
@@ -0,0 +1,27 @@
+package friend.spring.domain;
+
+import friend.spring.domain.common.BaseEntity;
+import lombok.*;
+
+import javax.persistence.*;
+import java.util.ArrayList;
+import java.util.List;
+
+@Entity
+@Getter
+@Builder
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+@AllArgsConstructor
+public class Category extends BaseEntity {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @Column(nullable = false, length = 10)
+    private String name;
+
+    @Builder.Default
+    @OneToMany(mappedBy = "category")
+    private List<Post> postList = new ArrayList<>();
+}
diff --git a/src/main/java/friend/spring/domain/Post.java b/src/main/java/friend/spring/domain/Post.java
index 447f9fe..6e85c70 100644
--- a/src/main/java/friend/spring/domain/Post.java
+++ b/src/main/java/friend/spring/domain/Post.java
@@ -57,6 +57,9 @@ public class Post extends BaseEntity {
     @JoinColumn(name = "user_id")
     private User user;
 
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "category_id")
+    private Category postCategory;
     // 부모 글 정의
     // 고민후기 원글 아이디
     @ManyToOne(fetch = FetchType.LAZY)