diff --git a/hutool-core/src/main/java/cn/hutool/core/lang/tree/TreeUtil.java b/hutool-core/src/main/java/cn/hutool/core/lang/tree/TreeUtil.java
index 3edd7e99c..45e9f6003 100644
--- a/hutool-core/src/main/java/cn/hutool/core/lang/tree/TreeUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/lang/tree/TreeUtil.java
@@ -65,6 +65,7 @@ public class TreeUtil {
      * @param maxDeep    最大递归深度 可能为null即不限制
      */
     private static void innerBuild(List<TreeNodeMap> treeNodes, TreeNodeMap parentNode, int deep, Integer maxDeep) {
+
         if (CollectionUtil.isEmpty(treeNodes)) {
             return;
         }