diff --git a/module-domain/src/main/java/com/gaethering/moduledomain/domain/board/Category.java b/module-domain/src/main/java/com/gaethering/moduledomain/domain/board/Category.java
new file mode 100644
index 0000000..4f353aa
--- /dev/null
+++ b/module-domain/src/main/java/com/gaethering/moduledomain/domain/board/Category.java
@@ -0,0 +1,26 @@
+package com.gaethering.moduledomain.domain.board;
+
+import lombok.*;
+
+import javax.persistence.*;
+import java.util.ArrayList;
+import java.util.List;
+
+@Entity
+@Getter
+@Builder
+@AllArgsConstructor
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class Category {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Column(name = "category_id")
+    private Long id;
+
+    @Column(nullable = false)
+    private String categoryName;
+
+    @OneToMany(mappedBy = "category")
+    private List<PostCategory> postCategories = new ArrayList<>();
+}
diff --git a/module-domain/src/main/java/com/gaethering/moduledomain/domain/board/Comment.java b/module-domain/src/main/java/com/gaethering/moduledomain/domain/board/Comment.java
new file mode 100644
index 0000000..88d36fc
--- /dev/null
+++ b/module-domain/src/main/java/com/gaethering/moduledomain/domain/board/Comment.java
@@ -0,0 +1,39 @@
+package com.gaethering.moduledomain.domain.board;
+
+import com.gaethering.moduledomain.domain.basic.BaseTimeEntity;
+import com.gaethering.moduledomain.domain.member.Member;
+import lombok.*;
+
+import javax.persistence.*;
+
+@Entity
+@Getter
+@Builder
+@AllArgsConstructor
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class Comment extends BaseTimeEntity {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Column(name = "comment_id", nullable = false)
+    private Long id;
+
+    @Column(nullable = false)
+    private String comment;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "post_id", updatable = false)
+    private Post post;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "member_id", updatable = false)
+    private Member member;
+
+    public void setPost (Post post) {
+        this.post = post;
+    }
+
+    public void setMember (Member member) {
+        this.member = member;
+    }
+}
diff --git a/module-domain/src/main/java/com/gaethering/moduledomain/domain/board/Heart.java b/module-domain/src/main/java/com/gaethering/moduledomain/domain/board/Heart.java
new file mode 100644
index 0000000..ec6df2a
--- /dev/null
+++ b/module-domain/src/main/java/com/gaethering/moduledomain/domain/board/Heart.java
@@ -0,0 +1,34 @@
+package com.gaethering.moduledomain.domain.board;
+
+import com.gaethering.moduledomain.domain.member.Member;
+import lombok.*;
+
+import javax.persistence.*;
+
+@Entity
+@Getter
+@Builder
+@AllArgsConstructor
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class Heart {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Column(name = "heart_id")
+    private Long id;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "member_id", updatable = false)
+    private Member member;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "post_id", updatable = false)
+    private Post post;
+
+    public void setPost (Post post) {
+        this.post = post;
+    }
+    public void setMember (Member member) {
+        this.member = member;
+    }
+}
diff --git a/module-domain/src/main/java/com/gaethering/moduledomain/domain/board/Post.java b/module-domain/src/main/java/com/gaethering/moduledomain/domain/board/Post.java
new file mode 100644
index 0000000..e95867b
--- /dev/null
+++ b/module-domain/src/main/java/com/gaethering/moduledomain/domain/board/Post.java
@@ -0,0 +1,55 @@
+package com.gaethering.moduledomain.domain.board;
+
+import com.gaethering.moduledomain.domain.basic.BaseTimeEntity;
+import com.gaethering.moduledomain.domain.member.Member;
+import lombok.*;
+import org.hibernate.annotations.ColumnDefault;
+
+import javax.persistence.*;
+import java.util.ArrayList;
+import java.util.List;
+
+@Entity
+@Getter
+@Builder
+@AllArgsConstructor
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class Post extends BaseTimeEntity {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Column(name = "post_id", nullable = false)
+    private Long id;
+
+    @Column(nullable = false)
+    private String title;
+
+    @Column(columnDefinition = "TEXT", nullable = false)
+    private String content;
+
+    @ColumnDefault("0")
+    private int viewCnt;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "member_id")
+    private Member member;
+
+    @OneToMany(mappedBy = "post")
+    private List<Comment> comments = new ArrayList<>();
+
+    @OneToMany(mappedBy = "post",
+            cascade = CascadeType.REMOVE,
+            orphanRemoval = true)
+    private List<PostImage> postImages = new ArrayList<>();
+
+    @OneToMany(mappedBy = "post")
+    private List<Heart> hearts = new ArrayList<>();
+
+    @OneToMany(mappedBy = "post")
+    private List<PostCategory> postCategories = new ArrayList<>();
+
+    public void addImage (PostImage image) {
+        this.postImages.add(image);
+        image.setPost(this);
+    }
+}
diff --git a/module-domain/src/main/java/com/gaethering/moduledomain/domain/board/PostCategory.java b/module-domain/src/main/java/com/gaethering/moduledomain/domain/board/PostCategory.java
new file mode 100644
index 0000000..e322a1a
--- /dev/null
+++ b/module-domain/src/main/java/com/gaethering/moduledomain/domain/board/PostCategory.java
@@ -0,0 +1,26 @@
+package com.gaethering.moduledomain.domain.board;
+
+import lombok.*;
+
+import javax.persistence.*;
+
+@Entity
+@Getter
+@Builder
+@AllArgsConstructor
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class PostCategory {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Column(name = "post_category_id", nullable = false)
+    private Long id;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "post_id", updatable = false)
+    private Post post;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "category_id", updatable = false)
+    private Category category;
+}
diff --git a/module-domain/src/main/java/com/gaethering/moduledomain/domain/board/PostImage.java b/module-domain/src/main/java/com/gaethering/moduledomain/domain/board/PostImage.java
new file mode 100644
index 0000000..a58f6ab
--- /dev/null
+++ b/module-domain/src/main/java/com/gaethering/moduledomain/domain/board/PostImage.java
@@ -0,0 +1,30 @@
+package com.gaethering.moduledomain.domain.board;
+
+import lombok.*;
+
+import javax.persistence.*;
+
+@Entity
+@Getter
+@Builder
+@AllArgsConstructor
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class PostImage {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    @Column(name = "image_id")
+    private Long id;
+
+    private String imageUrl;
+
+    private boolean isRepresentative;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "post_id", updatable = false)
+    private Post post;
+
+    public void setPost (Post post) {
+        this.post = post;
+    }
+}
diff --git a/module-domain/src/main/java/com/gaethering/moduledomain/domain/member/Member.java b/module-domain/src/main/java/com/gaethering/moduledomain/domain/member/Member.java
index 2a7020c..ad8bf51 100644
--- a/module-domain/src/main/java/com/gaethering/moduledomain/domain/member/Member.java
+++ b/module-domain/src/main/java/com/gaethering/moduledomain/domain/member/Member.java
@@ -6,17 +6,8 @@
 import java.time.LocalDateTime;
 import java.util.ArrayList;
 import java.util.List;
-import javax.persistence.Column;
-import javax.persistence.Entity;
-import javax.persistence.EnumType;
-import javax.persistence.Enumerated;
-import javax.persistence.FetchType;
-import javax.persistence.GeneratedValue;
-import javax.persistence.GenerationType;
-import javax.persistence.Id;
-import javax.persistence.JoinColumn;
-import javax.persistence.OneToMany;
-import javax.persistence.OneToOne;
+import javax.persistence.*;
+
 import lombok.AllArgsConstructor;
 import lombok.Builder;
 import lombok.Getter;