diff --git a/src/main/java/com/corewing/app/entity/TutorialCategoryRelation.java b/src/main/java/com/corewing/app/entity/TutorialCategoryRelation.java
index da7310f..42fd192 100644
--- a/src/main/java/com/corewing/app/entity/TutorialCategoryRelation.java
+++ b/src/main/java/com/corewing/app/entity/TutorialCategoryRelation.java
@@ -1,5 +1,7 @@
 package com.corewing.app.entity;
 
+import com.baomidou.mybatisplus.annotation.IdType;
+import com.baomidou.mybatisplus.annotation.TableId;
 import com.baomidou.mybatisplus.annotation.TableName;
 import lombok.Data;
 
@@ -17,6 +19,7 @@ public class TutorialCategoryRelation implements Serializable {
     /**
      * id
      */
+    @TableId(value = "id", type = IdType.AUTO)
     private Long id;
 
     /**