diff --git a/Assets/YooAsset/Editor/UIElements/TreeViewer/TreeViewer.cs b/Assets/YooAsset/Editor/UIElements/TreeViewer/TreeViewer.cs
index 48236ca7..5ad37e44 100644
--- a/Assets/YooAsset/Editor/UIElements/TreeViewer/TreeViewer.cs
+++ b/Assets/YooAsset/Editor/UIElements/TreeViewer/TreeViewer.cs
@@ -52,7 +52,7 @@ namespace YooAsset.Editor
         {
             _rootList.Add(rootNode);
         }
-        
+
         /// <summary>
         /// 设置根节点数据
         /// </summary>
@@ -102,11 +102,6 @@ namespace YooAsset.Editor
             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;
@@ -134,14 +129,11 @@ namespace YooAsset.Editor
         {
             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;
+            toggle.style.marginLeft = treeNode.GetDepth() * 15;
 
             // 隐藏折叠按钮
             if (treeNode.Children.Count == 0)
diff --git a/Assets/YooAsset/Editor/UIElements/UIElementsIcon.cs b/Assets/YooAsset/Editor/UIElements/UIElementsIcon.cs
index be506500..8803b4f6 100644
--- a/Assets/YooAsset/Editor/UIElements/UIElementsIcon.cs
+++ b/Assets/YooAsset/Editor/UIElements/UIElementsIcon.cs
@@ -10,8 +10,13 @@ namespace YooAsset.Editor
         public const string RecordOn = "d_Record On@2x";
         public const string RecordOff = "d_Record Off@2x";
 
+#if UNITY_2019
+        public const string FoldoutOn = "IN foldout on";
+        public const string FoldoutOff = "IN foldout";
+#else
         public const string FoldoutOn = "d_IN_foldout_on@2x";
         public const string FoldoutOff = "d_IN_foldout@2x";
+#endif
 
         public const string VisibilityToggleOff = "animationvisibilitytoggleoff@2x";
         public const string VisibilityToggleOn = "animationvisibilitytoggleon@2x";
diff --git a/Assets/YooAsset/Runtime/DiagnosticSystem/RemotePlayerConnection.cs b/Assets/YooAsset/Runtime/DiagnosticSystem/RemotePlayerConnection.cs
index 4848d92c..05f8db53 100644
--- a/Assets/YooAsset/Runtime/DiagnosticSystem/RemotePlayerConnection.cs
+++ b/Assets/YooAsset/Runtime/DiagnosticSystem/RemotePlayerConnection.cs
@@ -23,12 +23,10 @@ namespace YooAsset
 
         public void Initialize()
         {
-            Debug.LogWarning("X=Initialize");
             _messageCallbacks.Clear();
         }
         public void Register(Guid messageID, UnityAction<MessageEventArgs> callback)
         {
-            Debug.LogWarning("X=Register");
             if (messageID == Guid.Empty)
                 throw new ArgumentException("messageID is empty !");
 
@@ -37,7 +35,6 @@ namespace YooAsset
         }
         public void Unregister(Guid messageID)
         {
-            Debug.LogWarning("X=Unregister");
             if (_messageCallbacks.ContainsKey(messageID))
                 _messageCallbacks.Remove(messageID);
         }