diff --git a/continew-admin-common/src/main/java/top/charles7c/cnadmin/common/util/TreeUtils.java b/continew-admin-common/src/main/java/top/charles7c/cnadmin/common/util/TreeUtils.java
index 225f6250..ff59cd28 100644
--- a/continew-admin-common/src/main/java/top/charles7c/cnadmin/common/util/TreeUtils.java
+++ b/continew-admin-common/src/main/java/top/charles7c/cnadmin/common/util/TreeUtils.java
@@ -16,7 +16,7 @@
 
 package top.charles7c.cnadmin.common.util;
 
-import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 
 import lombok.AccessLevel;
@@ -57,7 +57,7 @@ public class TreeUtils {
      */
     public static <T, E> List<Tree<E>> build(List<T> list, NodeParser<T, E> nodeParser) {
         if (CollUtil.isEmpty(list)) {
-            return new ArrayList<>();
+            return Collections.emptyList();
         }
         E parentId = (E)ReflectUtil.getFieldValue(list.get(0), DEFAULT_CONFIG.getParentIdKey());
         return TreeUtil.build(list, parentId, DEFAULT_CONFIG, nodeParser);
diff --git a/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/service/impl/DeptServiceImpl.java b/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/service/impl/DeptServiceImpl.java
index 1fee35ee..d659b4bd 100644
--- a/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/service/impl/DeptServiceImpl.java
+++ b/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/service/impl/DeptServiceImpl.java
@@ -17,6 +17,7 @@
 package top.charles7c.cnadmin.system.service.impl;
 
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 import java.util.Objects;
 import java.util.stream.Collectors;
@@ -92,7 +93,7 @@ public class DeptServiceImpl extends BaseServiceImpl<DeptMapper, DeptDO, DeptVO,
     @Override
     public List<DeptVO> buildListTree(List<DeptVO> list) {
         if (CollUtil.isEmpty(list)) {
-            return new ArrayList<>();
+            return Collections.emptyList();
         }
 
         // 去除重复子部门列表
diff --git a/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/service/impl/MenuServiceImpl.java b/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/service/impl/MenuServiceImpl.java
index b1542460..a32608fe 100644
--- a/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/service/impl/MenuServiceImpl.java
+++ b/continew-admin-system/src/main/java/top/charles7c/cnadmin/system/service/impl/MenuServiceImpl.java
@@ -17,6 +17,7 @@
 package top.charles7c.cnadmin.system.service.impl;
 
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 import java.util.Objects;
 import java.util.stream.Collectors;
@@ -83,7 +84,7 @@ public class MenuServiceImpl extends BaseServiceImpl<MenuMapper, MenuDO, MenuVO,
     @Override
     public List<MenuVO> buildListTree(List<MenuVO> list) {
         if (CollUtil.isEmpty(list)) {
-            return new ArrayList<>();
+            return Collections.emptyList();
         }
 
         // 去除重复子菜单列表