diff --git a/demo/Semi.Avalonia.Demo/Pages/GroupBoxDemo.axaml b/demo/Semi.Avalonia.Demo/Pages/GroupBoxDemo.axaml
new file mode 100644
index 0000000..9664f5f
--- /dev/null
+++ b/demo/Semi.Avalonia.Demo/Pages/GroupBoxDemo.axaml
@@ -0,0 +1,22 @@
+<UserControl 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"
+             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="1450"
+             x:Class="Semi.Avalonia.Demo.Pages.GroupBoxDemo">
+    <ScrollViewer>
+        <StackPanel HorizontalAlignment="Left" Spacing="20">
+            <GroupBox
+                HorizontalAlignment="Left"
+                MaxWidth="360">
+                <HeaderedContentControl.Header>
+                    <Panel>
+                        <SelectableTextBlock Text="Semi Design" />
+                        <HyperlinkButton HorizontalAlignment="Right" Content="更多" />
+                    </Panel>
+                </HeaderedContentControl.Header>
+                <SelectableTextBlock Text="Semi Design 是由互娱社区前端团队与 UED 团队共同设计开发并维护的设计系统。设计系统包含设计语言以及一整套可复用的前端组件，帮助设计师与开发者更容易地打造高质量的、用户体验一致的、符合设计规范的 Web 应用。" />
+            </GroupBox>
+        </StackPanel>
+    </ScrollViewer>
+</UserControl>
\ No newline at end of file
diff --git a/demo/Semi.Avalonia.Demo/Pages/GroupBoxDemo.axaml.cs b/demo/Semi.Avalonia.Demo/Pages/GroupBoxDemo.axaml.cs
new file mode 100644
index 0000000..c058313
--- /dev/null
+++ b/demo/Semi.Avalonia.Demo/Pages/GroupBoxDemo.axaml.cs
@@ -0,0 +1,11 @@
+using Avalonia.Controls;
+
+namespace Semi.Avalonia.Demo.Pages;
+
+public partial class GroupBoxDemo : UserControl
+{
+    public GroupBoxDemo()
+    {
+        InitializeComponent();
+    }
+}
\ No newline at end of file
diff --git a/demo/Semi.Avalonia.Demo/Pages/HeaderedContentControlDemo.axaml b/demo/Semi.Avalonia.Demo/Pages/HeaderedContentControlDemo.axaml
index b778b13..c383f29 100644
--- a/demo/Semi.Avalonia.Demo/Pages/HeaderedContentControlDemo.axaml
+++ b/demo/Semi.Avalonia.Demo/Pages/HeaderedContentControlDemo.axaml
@@ -36,9 +36,7 @@
                         <HyperlinkButton HorizontalAlignment="Right" Content="更多" />
                     </Panel>
                 </HeaderedContentControl.Header>
-                <HeaderedContentControl.Content>
-                    <SelectableTextBlock Text="Semi Design 是由互娱社区前端团队与 UED 团队共同设计开发并维护的设计系统。设计系统包含设计语言以及一整套可复用的前端组件，帮助设计师与开发者更容易地打造高质量的、用户体验一致的、符合设计规范的 Web 应用。" />
-                </HeaderedContentControl.Content>
+                <SelectableTextBlock Text="Semi Design 是由互娱社区前端团队与 UED 团队共同设计开发并维护的设计系统。设计系统包含设计语言以及一整套可复用的前端组件，帮助设计师与开发者更容易地打造高质量的、用户体验一致的、符合设计规范的 Web 应用。" />
             </HeaderedContentControl>
         </StackPanel>
     </ScrollViewer>
diff --git a/demo/Semi.Avalonia.Demo/Views/MainView.axaml b/demo/Semi.Avalonia.Demo/Views/MainView.axaml
index 9100fa8..1091640 100644
--- a/demo/Semi.Avalonia.Demo/Views/MainView.axaml
+++ b/demo/Semi.Avalonia.Demo/Views/MainView.axaml
@@ -243,6 +243,9 @@
             <TabItem Header="Flyout">
                 <pages:FlyoutDemo />
             </TabItem>
+            <TabItem Header="GroupBox">
+                <pages:GroupBoxDemo />
+            </TabItem>
             <TabItem Header="HeaderedContentControl">
                 <pages:HeaderedContentControlDemo />
             </TabItem>
diff --git a/src/Semi.Avalonia/Controls/GroupBox.axaml b/src/Semi.Avalonia/Controls/GroupBox.axaml
new file mode 100644
index 0000000..97cb4d2
--- /dev/null
+++ b/src/Semi.Avalonia/Controls/GroupBox.axaml
@@ -0,0 +1,6 @@
+<ResourceDictionary
+    xmlns="https://github.com/avaloniaui"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    x:CompileBindings="True">
+    <StaticResource x:Key="{x:Type GroupBox}" ResourceKey="GroupBox"/>
+</ResourceDictionary>
\ No newline at end of file
diff --git a/src/Semi.Avalonia/Controls/HeaderedContentControl.axaml b/src/Semi.Avalonia/Controls/HeaderedContentControl.axaml
index e328594..3376000 100644
--- a/src/Semi.Avalonia/Controls/HeaderedContentControl.axaml
+++ b/src/Semi.Avalonia/Controls/HeaderedContentControl.axaml
@@ -1,7 +1,7 @@
 <ResourceDictionary
     xmlns="https://github.com/avaloniaui"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-    xmlns:converters="clr-namespace:Avalonia.Controls.Converters;assembly=Avalonia.Controls"
+    xmlns:iri="https://irihi.tech/shared"
     x:CompileBindings="True">
     <Design.PreviewWith>
         <StackPanel Spacing="20">
@@ -24,7 +24,6 @@
             </HeaderedContentControl>
         </StackPanel>
     </Design.PreviewWith>
-    <converters:MarginMultiplierConverter x:Key="SeparatorBorderMultiplier" Top="True" Indent="1" />
 
     <ControlTheme x:Key="{x:Type HeaderedContentControl}" TargetType="HeaderedContentControl">
         <Setter Property="Padding" Value="3" />
@@ -92,7 +91,7 @@
                             Name="SeparatorBorder"
                             Grid.Row="1"
                             BorderBrush="{TemplateBinding BorderBrush}"
-                            BorderThickness="{TemplateBinding BorderThickness, Converter={StaticResource SeparatorBorderMultiplier}}">
+                            BorderThickness="{TemplateBinding BorderThickness, Converter={iri:ThicknessMixerConverter Top}}">
                             <Border.IsVisible>
                                 <MultiBinding Converter="{x:Static BoolConverters.And}">
                                     <TemplateBinding Property="Header" Converter="{x:Static ObjectConverters.IsNotNull}" />
diff --git a/src/Semi.Avalonia/Controls/_index.axaml b/src/Semi.Avalonia/Controls/_index.axaml
index b65b3a1..a941a2c 100644
--- a/src/Semi.Avalonia/Controls/_index.axaml
+++ b/src/Semi.Avalonia/Controls/_index.axaml
@@ -23,6 +23,7 @@
         <ResourceInclude Source="Expander.axaml" />
         <ResourceInclude Source="FlyoutPresenter.axaml" />
         <ResourceInclude Source="GridSplitter.axaml" />
+        <ResourceInclude Source="GroupBox.axaml" />
         <ResourceInclude Source="HeaderedContentControl.axaml" />
         <ResourceInclude Source="HyperlinkButton.axaml" />
         <ResourceInclude Source="ItemsControl.axaml" />