diff --git a/demo/Semi.Avalonia.Demo/Pages/TreeViewDemo.axaml b/demo/Semi.Avalonia.Demo/Pages/TreeViewDemo.axaml
index 74a29ee..5b3a663 100644
--- a/demo/Semi.Avalonia.Demo/Pages/TreeViewDemo.axaml
+++ b/demo/Semi.Avalonia.Demo/Pages/TreeViewDemo.axaml
@@ -1,9 +1,13 @@
 <UserControl
-    x:Class="Semi.Avalonia.Demo.Pages.TreeViewDemo" xmlns="https://github.com/avaloniaui"
-    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
-    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" d:DesignHeight="450"
-    d:DesignWidth="800" mc:Ignorable="d">
-    <Panel>
+    x:Class="Semi.Avalonia.Demo.Pages.TreeViewDemo"
+    xmlns="https://github.com/avaloniaui"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    d:DesignHeight="450"
+    d:DesignWidth="800"
+    mc:Ignorable="d">
+    <Panel HorizontalAlignment="Left">
         <TreeView>
             <TreeViewItem Header="Level 1">
                 <TreeViewItem Header="Level 2" />
diff --git a/src/Semi.Avalonia/Controls/TreeView.axaml b/src/Semi.Avalonia/Controls/TreeView.axaml
index 5e75f7f..71013a7 100644
--- a/src/Semi.Avalonia/Controls/TreeView.axaml
+++ b/src/Semi.Avalonia/Controls/TreeView.axaml
@@ -93,7 +93,6 @@
     </ControlTheme>
 
     <ControlTheme x:Key="{x:Type TreeViewItem}" TargetType="TreeViewItem">
-        <Setter Property="TreeViewItem.Padding" Value="0" />
         <Setter Property="TreeViewItem.Background" Value="{DynamicResource TreeViewItemDefaultBackground}" />
         <Setter Property="TreeViewItem.Foreground" Value="{DynamicResource TreeViewItemDefaultForeground}" />
         <Setter Property="TreeViewItem.CornerRadius" Value="3" />
diff --git a/src/Semi.Avalonia/Themes/Dark/TreeView.axaml b/src/Semi.Avalonia/Themes/Dark/TreeView.axaml
index 91383b9..d8d36e7 100644
--- a/src/Semi.Avalonia/Themes/Dark/TreeView.axaml
+++ b/src/Semi.Avalonia/Themes/Dark/TreeView.axaml
@@ -21,5 +21,5 @@
     <SolidColorBrush x:Key="TreeViewItemSelectedDisabledBackground" Opacity="0.04" Color="#E6E8EA" />
 
     <Thickness x:Key="TreeViewItemIconMargin">8 0</Thickness>
-    <Thickness x:Key="TreeViewItemPadding">0 4 0 4</Thickness>
+    <Thickness x:Key="TreeViewItemPadding">0 4 8 4</Thickness>
 </ResourceDictionary>
diff --git a/src/Semi.Avalonia/Themes/Light/TreeView.axaml b/src/Semi.Avalonia/Themes/Light/TreeView.axaml
index 690b858..90fad00 100644
--- a/src/Semi.Avalonia/Themes/Light/TreeView.axaml
+++ b/src/Semi.Avalonia/Themes/Light/TreeView.axaml
@@ -21,5 +21,5 @@
     <SolidColorBrush x:Key="TreeViewItemSelectedDisabledBackground" Opacity="0.02" Color="#2E3238" />
 
     <Thickness x:Key="TreeViewItemIconMargin">8 0</Thickness>
-    <Thickness x:Key="TreeViewItemPadding">0 4 0 4</Thickness>
+    <Thickness x:Key="TreeViewItemPadding">0 4 8 4</Thickness>
 </ResourceDictionary>