diff --git a/src/main/java/cc/ryanc/halo/model/dto/post/PostMinimalOutputDTO.java b/src/main/java/cc/ryanc/halo/model/dto/post/PostMinimalOutputDTO.java
index 2959230cb..2527049eb 100644
--- a/src/main/java/cc/ryanc/halo/model/dto/post/PostMinimalOutputDTO.java
+++ b/src/main/java/cc/ryanc/halo/model/dto/post/PostMinimalOutputDTO.java
@@ -8,6 +8,8 @@ import lombok.Data;
 import lombok.EqualsAndHashCode;
 import lombok.ToString;
 
+import java.util.Date;
+
 /**
  * Post minimal output dto.
  *
@@ -42,4 +44,19 @@ public class PostMinimalOutputDTO implements OutputConverter<PostMinimalOutputDT
      * Post type
      */
     private PostType type;
+
+    /**
+     * 更新时间戳
+     */
+    private Date updateTime;
+
+    /**
+     * 创建时间戳
+     */
+    private Date createTime;
+
+    /**
+     * Edit time.
+     */
+    private Date editTime;
 }
diff --git a/src/main/java/cc/ryanc/halo/model/dto/post/PostSimpleOutputDTO.java b/src/main/java/cc/ryanc/halo/model/dto/post/PostSimpleOutputDTO.java
index 51e2fed80..3ce2ff38e 100644
--- a/src/main/java/cc/ryanc/halo/model/dto/post/PostSimpleOutputDTO.java
+++ b/src/main/java/cc/ryanc/halo/model/dto/post/PostSimpleOutputDTO.java
@@ -66,18 +66,4 @@ public class PostSimpleOutputDTO extends PostMinimalOutputDTO {
      */
     private Long likes;
 
-    /**
-     * 创建时间戳
-     */
-    private Date createTime;
-
-    /**
-     * 更新时间戳
-     */
-    private Date updateTime;
-
-    /**
-     * Edit time.
-     */
-    private Date editTime;
 }
diff --git a/src/main/java/cc/ryanc/halo/model/entity/PostCategory.java b/src/main/java/cc/ryanc/halo/model/entity/PostCategory.java
index 92555fde1..967c46d2c 100644
--- a/src/main/java/cc/ryanc/halo/model/entity/PostCategory.java
+++ b/src/main/java/cc/ryanc/halo/model/entity/PostCategory.java
@@ -51,7 +51,6 @@ public class PostCategory extends BaseEntity {
     public boolean equals(Object o) {
         if (this == o) return true;
         if (o == null || getClass() != o.getClass()) return false;
-        if (!super.equals(o)) return false;
         PostCategory that = (PostCategory) o;
         return categoryId.equals(that.categoryId) &&
                 postId.equals(that.postId);
@@ -59,6 +58,6 @@ public class PostCategory extends BaseEntity {
 
     @Override
     public int hashCode() {
-        return Objects.hash(super.hashCode(), categoryId, postId);
+        return Objects.hash(categoryId, postId);
     }
 }
diff --git a/src/main/java/cc/ryanc/halo/model/entity/PostTag.java b/src/main/java/cc/ryanc/halo/model/entity/PostTag.java
index 2420c329a..7473b1e5e 100644
--- a/src/main/java/cc/ryanc/halo/model/entity/PostTag.java
+++ b/src/main/java/cc/ryanc/halo/model/entity/PostTag.java
@@ -49,7 +49,6 @@ public class PostTag extends BaseEntity {
     public boolean equals(Object o) {
         if (this == o) return true;
         if (o == null || getClass() != o.getClass()) return false;
-        if (!super.equals(o)) return false;
         PostTag postTag = (PostTag) o;
         return Objects.equals(postId, postTag.postId) &&
                 Objects.equals(tagId, postTag.tagId);
@@ -57,6 +56,6 @@ public class PostTag extends BaseEntity {
 
     @Override
     public int hashCode() {
-        return Objects.hash(super.hashCode(), postId, tagId);
+        return Objects.hash(postId, tagId);
     }
 }