diff --git a/src/main/java/com/corewing/app/modules/admin/biz/BizTutorialController.java b/src/main/java/com/corewing/app/modules/admin/biz/BizTutorialController.java
index cd1c4ea..b7398d3 100644
--- a/src/main/java/com/corewing/app/modules/admin/biz/BizTutorialController.java
+++ b/src/main/java/com/corewing/app/modules/admin/biz/BizTutorialController.java
@@ -56,7 +56,7 @@ public class BizTutorialController {
     @PostMapping("/update")
     @ResponseBody
     public Result<String> update(@RequestBody Tutorial tutorial) {
-        return Result.isBool(tutorialService.updateById(tutorial));
+        return Result.isBool(tutorialService.update(tutorial));
     }
 
     /**
diff --git a/src/main/java/com/corewing/app/service/impl/TutorialServiceImpl.java b/src/main/java/com/corewing/app/service/impl/TutorialServiceImpl.java
index 3f96f0b..0c20bc1 100644
--- a/src/main/java/com/corewing/app/service/impl/TutorialServiceImpl.java
+++ b/src/main/java/com/corewing/app/service/impl/TutorialServiceImpl.java
@@ -57,7 +57,7 @@ public class TutorialServiceImpl extends ServiceImpl<TutorialMapper, Tutorial> i
     @Override
     public boolean update(Tutorial tutorial) {
         super.updateById(tutorial);
-        tutorialCategoryRelationService.remove(new LambdaQueryWrapper<TutorialCategoryRelation>().eq(TutorialCategoryRelation::getCategoryId, tutorial.getCategoryId()));
+        tutorialCategoryRelationService.remove(new LambdaQueryWrapper<TutorialCategoryRelation>().eq(TutorialCategoryRelation::getTutorialId, tutorial.getId()));
         TutorialCategoryRelation tutorialCategoryRelation = new TutorialCategoryRelation();
         tutorialCategoryRelation.setTutorialId(tutorial.getId());
         tutorialCategoryRelation.setCategoryId(tutorial.getCategoryId());