diff --git a/Assets/YooAsset/Editor/AssetBundleDebugger/VisualViewers/DebuggerOperationListViewer.cs b/Assets/YooAsset/Editor/AssetBundleDebugger/VisualViewers/DebuggerOperationListViewer.cs
index 93373cd9..78bd8a31 100644
--- a/Assets/YooAsset/Editor/AssetBundleDebugger/VisualViewers/DebuggerOperationListViewer.cs
+++ b/Assets/YooAsset/Editor/AssetBundleDebugger/VisualViewers/DebuggerOperationListViewer.cs
@@ -22,11 +22,8 @@ namespace YooAsset.Editor
 
         private TableView _operationTableView;
         private Toolbar _bottomToolbar;
-#if UNITY_2022_3_OR_NEWER
-        private TreeView _childTreeView;
-#endif
+        private TreeViewer _childTreeView;
 
-        private int _treeItemID = 0;
         private List<ITableData> _sourceDatas;
 
 
@@ -53,11 +50,9 @@ namespace YooAsset.Editor
             CreateBottomToolbarHeaders();
 
             // 子列表
-#if UNITY_2022_3_OR_NEWER
-            _childTreeView = _root.Q<TreeView>("BottomTreeView");
+            _childTreeView = _root.Q<TreeViewer>("BottomTreeView");
             _childTreeView.makeItem = MakeTreeViewItem;
             _childTreeView.bindItem = BindTreeViewItem;
-#endif
 
             // 面板分屏
             var topGroup = _root.Q<VisualElement>("TopGroup");
@@ -307,11 +302,8 @@ namespace YooAsset.Editor
         {
             // 清空旧数据
             _operationTableView.ClearAll(false, true);
-
-#if UNITY_2022_3_OR_NEWER
-            _childTreeView.SetRootItems(new List<TreeViewItemData<DebugOperationInfo>>());
-            _childTreeView.Rebuild();
-#endif
+            _childTreeView.ClearAll();
+            _childTreeView.RebuildView();
 
             // 填充数据源
             _sourceDatas = new List<ITableData>(1000);
@@ -345,10 +337,7 @@ namespace YooAsset.Editor
         public void ClearView()
         {
             _operationTableView.ClearAll(false, true);
-#if UNITY_2022_3_OR_NEWER
-            _childTreeView.SetRootItems(new List<TreeViewItemData<DebugOperationInfo>>());
-            _childTreeView.Rebuild();
-#endif
+            _childTreeView.ClearAll();
             RebuildView(null);
         }
 
@@ -362,6 +351,7 @@ namespace YooAsset.Editor
 
             // 重建视图
             _operationTableView.RebuildView();
+            _childTreeView.RebuildView();
         }
 
         /// <summary>
@@ -380,23 +370,20 @@ namespace YooAsset.Editor
             _root.RemoveFromHierarchy();
         }
 
-#if UNITY_2022_3_OR_NEWER
         private void OnOperationTableViewSelectionChanged(ITableData data)
         {
             var operationTableData = data as OperationTableData;
             DebugPackageData packageData = operationTableData.PackageData;
             DebugOperationInfo operationInfo = operationTableData.OperationInfo;
 
-            _treeItemID = 0;
-            var rootItems = CreateTreeData(operationInfo);
-            _childTreeView.SetRootItems(rootItems);
-            _childTreeView.Rebuild();
+            TreeNode rootNode = new TreeNode(operationInfo);
+            FillTreeData(operationInfo, rootNode);
+            _childTreeView.ClearAll();
+            _childTreeView.SetRootItem(rootNode);
+            _childTreeView.RebuildView();
         }
-        private VisualElement MakeTreeViewItem()
+        private void MakeTreeViewItem(VisualElement container)
         {
-            VisualElement treeViewElement = new VisualElement();
-            treeViewElement.style.flexDirection = FlexDirection.Row;
-
             // OperationName
             {
                 Label label = new Label();
@@ -404,7 +391,7 @@ namespace YooAsset.Editor
                 label.style.flexGrow = 0f;
                 label.style.width = 300;
                 label.style.unityTextAlign = TextAnchor.MiddleLeft;
-                treeViewElement.Add(label);
+                container.Add(label);
             }
 
             // Progress
@@ -414,7 +401,7 @@ namespace YooAsset.Editor
                 label.style.flexGrow = 0f;
                 label.style.width = 100;
                 label.style.unityTextAlign = TextAnchor.MiddleLeft;
-                treeViewElement.Add(label);
+                container.Add(label);
             }
 
             // BeginTime
@@ -424,7 +411,7 @@ namespace YooAsset.Editor
                 label.style.flexGrow = 0f;
                 label.style.width = 100;
                 label.style.unityTextAlign = TextAnchor.MiddleLeft;
-                treeViewElement.Add(label);
+                container.Add(label);
             }
 
             // ProcessTime
@@ -434,7 +421,7 @@ namespace YooAsset.Editor
                 label.style.flexGrow = 0f;
                 label.style.width = 100;
                 label.style.unityTextAlign = TextAnchor.MiddleLeft;
-                treeViewElement.Add(label);
+                container.Add(label);
             }
 
             // Status
@@ -444,7 +431,7 @@ namespace YooAsset.Editor
                 label.style.flexGrow = 0f;
                 label.style.width = 100;
                 label.style.unityTextAlign = TextAnchor.MiddleLeft;
-                treeViewElement.Add(label);
+                container.Add(label);
             }
 
             // Desc
@@ -454,36 +441,34 @@ namespace YooAsset.Editor
                 label.style.flexGrow = 1f;
                 label.style.width = 500;
                 label.style.unityTextAlign = TextAnchor.MiddleLeft;
-                treeViewElement.Add(label);
+                container.Add(label);
             }
-
-            return treeViewElement;
         }
-        private void BindTreeViewItem(VisualElement element, int index)
+        private void BindTreeViewItem(VisualElement container, object userData)
         {
-            var operationInfo = _childTreeView.GetItemDataForIndex<DebugOperationInfo>(index);
+            var operationInfo = userData as DebugOperationInfo;
 
             // OperationName
             {
-                var label = element.Q<Label>("OperationName");
+                var label = container.Q<Label>("OperationName");
                 label.text = operationInfo.OperationName;
             }
 
             // Progress
             {
-                var label = element.Q<Label>("Progress");
+                var label = container.Q<Label>("Progress");
                 label.text = operationInfo.Progress.ToString();
             }
 
             // BeginTime
             {
-                var label = element.Q<Label>("BeginTime");
+                var label = container.Q<Label>("BeginTime");
                 label.text = operationInfo.BeginTime;
             }
 
             // ProcessTime
             {
-                var label = element.Q<Label>("ProcessTime");
+                var label = container.Q<Label>("ProcessTime");
                 label.text = operationInfo.ProcessTime.ToString();
             }
 
@@ -495,33 +480,26 @@ namespace YooAsset.Editor
                 else
                     textColor = new StyleColor(Color.white);
 
-                var label = element.Q<Label>("Status");
+                var label = container.Q<Label>("Status");
                 label.text = operationInfo.Status;
                 label.style.color = textColor;
             }
 
             // Desc
             {
-                var label = element.Q<Label>("Desc");
+                var label = container.Q<Label>("Desc");
                 label.text = operationInfo.OperationDesc;
             }
         }
-        private List<TreeViewItemData<DebugOperationInfo>> CreateTreeData(DebugOperationInfo parentOperation)
+        private void FillTreeData(DebugOperationInfo parentOperation, TreeNode rootNode)
         {
-            var rootItemList = new List<TreeViewItemData<DebugOperationInfo>>();
             foreach (var childOperation in parentOperation.Childs)
             {
-                var childItemList = CreateTreeData(childOperation);
-                var treeItem = new TreeViewItemData<DebugOperationInfo>(_treeItemID++, childOperation, childItemList);
-                rootItemList.Add(treeItem);
+                var childNode = new TreeNode(childOperation);
+                rootNode.AddChild(childNode);
+                FillTreeData(childOperation, childNode);
             }
-            return rootItemList;
         }
-#else
-        private void OnOperationTableViewSelectionChanged(ITableData data)
-        {
-        }
-#endif
     }
 }
 #endif
\ No newline at end of file
diff --git a/Assets/YooAsset/Editor/AssetBundleDebugger/VisualViewers/DebuggerOperationListViewer.uxml b/Assets/YooAsset/Editor/AssetBundleDebugger/VisualViewers/DebuggerOperationListViewer.uxml
index e9e6abd2..55b9745f 100644
--- a/Assets/YooAsset/Editor/AssetBundleDebugger/VisualViewers/DebuggerOperationListViewer.uxml
+++ b/Assets/YooAsset/Editor/AssetBundleDebugger/VisualViewers/DebuggerOperationListViewer.uxml
@@ -4,6 +4,6 @@
     </ui:VisualElement>
     <ui:VisualElement name="BottomGroup" style="flex-grow: 1;">
         <uie:Toolbar name="BottomToolbar" />
-        <ui:TreeView name="BottomTreeView" />
+        <YooAsset.Editor.TreeViewer name="BottomTreeView" />
     </ui:VisualElement>
 </ui:UXML>
diff --git a/Assets/YooAsset/Editor/UIElements/ElementsDefine/ToggleFoldout.cs b/Assets/YooAsset/Editor/UIElements/ElementsDefine/ToggleFoldout.cs
new file mode 100644
index 00000000..6ac15601
--- /dev/null
+++ b/Assets/YooAsset/Editor/UIElements/ElementsDefine/ToggleFoldout.cs
@@ -0,0 +1,55 @@
+#if UNITY_2019_4_OR_NEWER
+using System;
+using UnityEditor;
+using UnityEngine;
+using UnityEditor.UIElements;
+using UnityEngine.UIElements;
+
+namespace YooAsset.Editor
+{
+    /// <summary>
+    /// 折叠开关
+    /// </summary>
+    public class ToggleFoldout : Toggle
+    {
+        public new class UxmlFactory : UxmlFactory<ToggleFoldout, UxmlTraits>
+        {
+        }
+
+        private readonly VisualElement _checkbox;
+
+        public ToggleFoldout()
+        {
+            _checkbox = this.Q<VisualElement>("unity-checkmark");
+            RefreshIcon();
+        }
+        public override void SetValueWithoutNotify(bool newValue)
+        {
+            base.SetValueWithoutNotify(newValue);
+            RefreshIcon();
+        }
+
+#if UNITY_2021_3_OR_NEWER
+        protected override void ToggleValue()
+        {
+            base.ToggleValue();
+            RefreshIcon();
+        }
+#endif
+
+        public void RefreshIcon()
+        {
+            if (this.value)
+            {
+                var icon = EditorGUIUtility.IconContent(UIElementsIcon.FoldoutOn).image as Texture2D;
+                _checkbox.style.backgroundImage = icon;
+            }
+            else
+            {
+                var icon = EditorGUIUtility.IconContent(UIElementsIcon.FoldoutOff).image as Texture2D;
+                _checkbox.style.backgroundImage = icon;
+            }
+        }
+    }
+}
+#endif
\ No newline at end of file
diff --git a/Assets/YooAsset/Editor/UIElements/ElementsDefine/ToggleFoldout.cs.meta b/Assets/YooAsset/Editor/UIElements/ElementsDefine/ToggleFoldout.cs.meta
new file mode 100644
index 00000000..ba9569a2
--- /dev/null
+++ b/Assets/YooAsset/Editor/UIElements/ElementsDefine/ToggleFoldout.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 2619997e70d98794da26a947f9129e25
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/YooAsset/Editor/UIElements/TreeViewer.meta b/Assets/YooAsset/Editor/UIElements/TreeViewer.meta
new file mode 100644
index 00000000..e005300d
--- /dev/null
+++ b/Assets/YooAsset/Editor/UIElements/TreeViewer.meta
@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 1797f960cdbd5aa41a96bb02d16c4998
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/YooAsset/Editor/UIElements/TreeViewer/TreeNode.cs b/Assets/YooAsset/Editor/UIElements/TreeViewer/TreeNode.cs
new file mode 100644
index 00000000..015fdbc0
--- /dev/null
+++ b/Assets/YooAsset/Editor/UIElements/TreeViewer/TreeNode.cs
@@ -0,0 +1,77 @@
+#if UNITY_2019_4_OR_NEWER
+using System.IO;
+using System.Linq;
+using System.Collections.Generic;
+using UnityEditor;
+using UnityEngine;
+using UnityEditor.UIElements;
+using UnityEngine.UIElements;
+
+namespace YooAsset.Editor
+{
+    public class TreeNode
+    {
+        /// <summary>
+        /// 子节点集合
+        /// </summary>
+        public List<TreeNode> Children = new List<TreeNode>(10);
+
+        /// <summary>
+        /// 父节点
+        /// </summary>
+        public TreeNode Parent { get; set; }
+
+        /// <summary>
+        /// 用户数据
+        /// </summary>
+        public object UserData { get; set; }
+
+        /// <summary>
+        /// 是否展开
+        /// </summary>
+        public bool IsExpanded { get; set; } = false;
+
+
+        public TreeNode(object userData)
+        {
+            UserData = userData;
+        }
+
+        /// <summary>
+        /// 添加子节点
+        /// </summary>
+        public void AddChild(TreeNode child)
+        {
+            child.Parent = this;
+            Children.Add(child);
+        }
+
+        /// <summary>
+        /// 清理所有子节点
+        /// </summary>
+        public void ClearChildren()
+        {
+            foreach(var child in Children)
+            {
+                child.Parent = null;
+            }
+            Children.Clear();
+        }
+
+        /// <summary>
+        /// 计算节点的深度
+        /// </summary>
+        public int GetDepth()
+        {
+            int depth = 0;
+            TreeNode current = this;
+            while (current.Parent != null)
+            {
+                depth++;
+                current = current.Parent;
+            }
+            return depth;
+        }
+    }
+}
+#endif
\ No newline at end of file
diff --git a/Assets/YooAsset/Editor/UIElements/TreeViewer/TreeNode.cs.meta b/Assets/YooAsset/Editor/UIElements/TreeViewer/TreeNode.cs.meta
new file mode 100644
index 00000000..03123e63
--- /dev/null
+++ b/Assets/YooAsset/Editor/UIElements/TreeViewer/TreeNode.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 473cdc8e1dd7b0f43938ddb99287a2a8
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/YooAsset/Editor/UIElements/TreeViewer/TreeViewer.cs b/Assets/YooAsset/Editor/UIElements/TreeViewer/TreeViewer.cs
new file mode 100644
index 00000000..48236ca7
--- /dev/null
+++ b/Assets/YooAsset/Editor/UIElements/TreeViewer/TreeViewer.cs
@@ -0,0 +1,160 @@
+#if UNITY_2019_4_OR_NEWER
+using System;
+using System.Linq;
+using System.Collections.Generic;
+using UnityEditor;
+using UnityEngine;
+using UnityEditor.UIElements;
+using UnityEngine.UIElements;
+
+namespace YooAsset.Editor
+{
+    public class TreeViewer : VisualElement
+    {
+        public new class UxmlFactory : UxmlFactory<TreeViewer, UxmlTraits>
+        {
+        }
+
+        private readonly ListView _listView;
+        private readonly List<TreeNode> _flattenList = new List<TreeNode>(1000);
+        private readonly List<TreeNode> _rootList = new List<TreeNode>(100);
+
+        /// <summary>
+        /// 制作列表元素
+        /// </summary>
+        public Action<VisualElement> makeItem { get; set; }
+
+        /// <summary>
+        /// 绑定列表数据
+        /// </summary>
+        public Action<VisualElement, object> bindItem { get; set; }
+
+
+        public TreeViewer()
+        {
+            this.style.flexShrink = 1f;
+            this.style.flexGrow = 1f;
+
+            // 创建ListView
+            _listView = new ListView();
+            _listView.style.flexShrink = 1f;
+            _listView.style.flexGrow = 1f;
+            _listView.itemsSource = _flattenList;
+            _listView.makeItem = MakeItemInternal;
+            _listView.bindItem = BindItemInternal;
+            this.Add(_listView);
+        }
+
+        /// <summary>
+        /// 设置根节点数据
+        /// </summary>
+        public void SetRootItem(TreeNode rootNode)
+        {
+            _rootList.Add(rootNode);
+        }
+        
+        /// <summary>
+        /// 设置根节点数据
+        /// </summary>
+        public void SetRootItems(List<TreeNode> rootNodes)
+        {
+            _rootList.AddRange(rootNodes);
+        }
+
+        /// <summary>
+        /// 清理数据
+        /// </summary>
+        public void ClearAll()
+        {
+            _rootList.Clear();
+        }
+
+        /// <summary>
+        /// 重新绘制视图
+        /// </summary>
+        public void RebuildView()
+        {
+            _flattenList.Clear();
+            foreach (var treeRoot in _rootList)
+            {
+                FlattenTree(treeRoot, 0);
+            }
+            _listView.Rebuild();
+        }
+
+        /// <summary>
+        /// 将树形结构扁平化为列表
+        /// </summary>
+        private void FlattenTree(TreeNode node, int depth)
+        {
+            _flattenList.Add(node);
+            if (node.IsExpanded)
+            {
+                foreach (var child in node.Children)
+                {
+                    FlattenTree(child, depth + 1);
+                }
+            }
+        }
+
+        private VisualElement MakeItemInternal()
+        {
+            var container = new VisualElement();
+            container.style.flexDirection = FlexDirection.Row;
+
+            // 缩进元素
+            var label = new Label();
+            label.name = "space";
+            container.Add(label);
+
+            // 折叠按钮
+            var toggle = new ToggleFoldout();
+            toggle.text = string.Empty;
+            toggle.name = "foldout";
+            toggle.style.alignSelf = Align.Center;
+            toggle.style.width = 15;
+            toggle.style.height = 15;
+            toggle.RegisterValueChangedCallback((ChangeEvent<bool> callback) =>
+            {
+                var treeNode = toggle.userData as TreeNode;
+                treeNode.IsExpanded = toggle.value;
+                RebuildView();
+            });
+            container.Add(toggle);
+
+            // 用户自定义元素
+            if (makeItem != null)
+            {
+                makeItem.Invoke(container);
+            }
+
+            return container;
+        }
+        private void BindItemInternal(VisualElement item, int index)
+        {
+            var treeNode = _flattenList[index];
+
+            // 设置元素缩进
+            var space = item.Q<Label>("space");
+            space.text = new string(' ', treeNode.GetDepth() * 4);
+
+            // 设置折叠状态
+            var toggle = item.Q<ToggleFoldout>("foldout");
+            toggle.SetValueWithoutNotify(treeNode.IsExpanded);
+            toggle.userData = treeNode;
+
+            // 隐藏折叠按钮
+            if (treeNode.Children.Count == 0)
+            {
+                toggle.style.visibility = Visibility.Hidden;
+            }
+
+            // 用户自定义元素
+            if (bindItem != null)
+            {
+                bindItem.Invoke(item, treeNode.UserData);
+            }
+        }
+    }
+}
+#endif
\ No newline at end of file
diff --git a/Assets/YooAsset/Editor/UIElements/TreeViewer/TreeViewer.cs.meta b/Assets/YooAsset/Editor/UIElements/TreeViewer/TreeViewer.cs.meta
new file mode 100644
index 00000000..0075cf41
--- /dev/null
+++ b/Assets/YooAsset/Editor/UIElements/TreeViewer/TreeViewer.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: db2fb30e2d4512149b615fe6b2562ecd
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/YooAsset/Editor/UIElements/UIElementsIcon.cs b/Assets/YooAsset/Editor/UIElements/UIElementsIcon.cs
index ddde1c56..be506500 100644
--- a/Assets/YooAsset/Editor/UIElements/UIElementsIcon.cs
+++ b/Assets/YooAsset/Editor/UIElements/UIElementsIcon.cs
@@ -10,6 +10,9 @@ namespace YooAsset.Editor
         public const string RecordOn = "d_Record On@2x";
         public const string RecordOff = "d_Record Off@2x";
 
+        public const string FoldoutOn = "d_IN_foldout_on@2x";
+        public const string FoldoutOff = "d_IN_foldout@2x";
+
         public const string VisibilityToggleOff = "animationvisibilitytoggleoff@2x";
         public const string VisibilityToggleOn = "animationvisibilitytoggleon@2x";
     }