diff --git a/app/admin/svc/enterprise_manage/svc_central_kitchen_for_school.go b/app/admin/svc/enterprise_manage/svc_central_kitchen_for_school.go
index 8097352..a1b8c41 100644
--- a/app/admin/svc/enterprise_manage/svc_central_kitchen_for_school.go
+++ b/app/admin/svc/enterprise_manage/svc_central_kitchen_for_school.go
@@ -536,7 +536,7 @@ func CentralKitchenForSchoolStudentAdmission(req md.CentralKitchenForSchoolStude
 
 func CentralKitchenForSchoolStudentAdmissionByClass(req md.CentralKitchenForSchoolStudentAdmissionByClass) (err error) {
 	// 删除 class_with_user 记录
-	_, err = db.Db.In("class_id = ?", req.ClassIds).Delete(model.ClassWithUser{})
+	_, err = db.Db.In("class_id", req.ClassIds).Delete(model.ClassWithUser{})
 	return
 }