diff --git a/src/main/java/com/zhangmeng/online/exam/ui/controller/PermissionChooseController.java b/src/main/java/com/zhangmeng/online/exam/ui/controller/PermissionChooseController.java
index 3a17a53..a4ca11c 100644
--- a/src/main/java/com/zhangmeng/online/exam/ui/controller/PermissionChooseController.java
+++ b/src/main/java/com/zhangmeng/online/exam/ui/controller/PermissionChooseController.java
@@ -113,7 +113,13 @@ public class PermissionChooseController {
     private void setPermissionChecked(CheckBoxTreeItem<PermissionWrapper> item) {
         Permission permission = item.getValue().getPermission();
         if (permission != null && role.hasPermission(permission.getId())) {
-            item.setSelected(true);
+
+            if (permission.getParentId() == 0){
+                item.setIndeterminate(true);
+            }else {
+                item.setSelected(true);
+            }
+
         }
 
         item.getChildren().forEach(child ->
diff --git a/src/main/java/com/zhangmeng/online/exam/ui/module/Role.java b/src/main/java/com/zhangmeng/online/exam/ui/module/Role.java
index 3f43c81..5adf1ac 100644
--- a/src/main/java/com/zhangmeng/online/exam/ui/module/Role.java
+++ b/src/main/java/com/zhangmeng/online/exam/ui/module/Role.java
@@ -79,7 +79,7 @@ public class Role {
     }
 
     public void setPermissions(List<Permission> permissions) {
-        this.permissions = new ArrayList<>(permissions);
+        this.permissions = permissions;
     }
 
     public void addPermission(Permission permission) {