diff --git a/src/AtomUI.Controls/Breadcrumb/Breadcrumb.cs b/src/AtomUI.Controls/Breadcrumb/Breadcrumb.cs
index 39183a292..a33163d2c 100644
--- a/src/AtomUI.Controls/Breadcrumb/Breadcrumb.cs
+++ b/src/AtomUI.Controls/Breadcrumb/Breadcrumb.cs
@@ -135,12 +135,12 @@ public class Breadcrumb : ItemsControl, IControlSharedTokenResourcesHost, IMotio
     {
         if (breadcrumbItem.Separator == null)
         {
-            breadcrumbItem.SetValue(SeparatorProperty, Separator, BindingPriority.Template);
+            breadcrumbItem.SetCurrentValue(SeparatorProperty, Separator);
         }
 
         if (breadcrumbItem.SeparatorTemplate == null)
         {
-            breadcrumbItem.SetValue(SeparatorTemplateProperty, SeparatorTemplate, BindingPriority.Template);
+            breadcrumbItem.SetCurrentValue(SeparatorTemplateProperty, SeparatorTemplate);
         }
     }
 
@@ -149,7 +149,7 @@ public class Breadcrumb : ItemsControl, IControlSharedTokenResourcesHost, IMotio
         base.OnApplyTemplate(e);
         if (Separator == null)
         {
-            SetValue(SeparatorProperty, DefaultSeparator, BindingPriority.Template);
+            SetCurrentValue(SeparatorProperty, DefaultSeparator);
         }
     }
 
diff --git a/src/AtomUI.Controls/Buttons/Button.cs b/src/AtomUI.Controls/Buttons/Button.cs
index d66b8d976..bddc86115 100644
--- a/src/AtomUI.Controls/Buttons/Button.cs
+++ b/src/AtomUI.Controls/Buttons/Button.cs
@@ -381,6 +381,7 @@ public class Button : AvaloniaButton,
         base.OnApplyTemplate(e);
         // 为了防止意外被用户改变背景，做了一个 frame
         _frame = e.NameScope.Find<Border>(ButtonThemeConstants.FramePart);
+        UpdatePseudoClasses();
     }
 
     protected override void OnLoaded(RoutedEventArgs e)
@@ -414,7 +415,6 @@ public class Button : AvaloniaButton,
     {
         base.OnAttachedToVisualTree(e);
         SetupEffectiveBorderThickness();
-        UpdatePseudoClasses();
     }
 
     private void SetupEffectiveBorderThickness()
diff --git a/src/AtomUI.Controls/Collapse/Collapse.cs b/src/AtomUI.Controls/Collapse/Collapse.cs
index 206f5a384..b43b0e871 100644
--- a/src/AtomUI.Controls/Collapse/Collapse.cs
+++ b/src/AtomUI.Controls/Collapse/Collapse.cs
@@ -58,8 +58,14 @@ public class Collapse : SelectingItemsControl,
     public static readonly StyledProperty<CollapseExpandIconPosition> ExpandIconPositionProperty =
         AvaloniaProperty.Register<Collapse, CollapseExpandIconPosition>(nameof(ExpandIconPosition));
 
-    public static readonly StyledProperty<bool> IsMotionEnabledProperty
-        = MotionAwareControlProperty.IsMotionEnabledProperty.AddOwner<Collapse>();
+    public static readonly StyledProperty<bool> IsMotionEnabledProperty =
+        MotionAwareControlProperty.IsMotionEnabledProperty.AddOwner<Collapse>();
+    
+    public static readonly StyledProperty<Thickness?> ItemHeaderPaddingProperty =
+        AvaloniaProperty.Register<Collapse, Thickness?>(nameof(ItemHeaderPadding));
+    
+    public static readonly StyledProperty<Thickness?> ItemContentPaddingProperty =
+        AvaloniaProperty.Register<Collapse, Thickness?>(nameof(ItemContentPadding));
 
     public SizeType SizeType
     {
@@ -102,6 +108,18 @@ public class Collapse : SelectingItemsControl,
         get => GetValue(IsMotionEnabledProperty);
         set => SetValue(IsMotionEnabledProperty, value);
     }
+    
+    public Thickness? ItemHeaderPadding
+    {
+        get => GetValue(ItemHeaderPaddingProperty);
+        set => SetValue(ItemHeaderPaddingProperty, value);
+    }
+
+    public Thickness? ItemContentPadding
+    {
+        get => GetValue(ItemContentPaddingProperty);
+        set => SetValue(ItemContentPaddingProperty, value);
+    }
 
     #endregion
 
@@ -223,6 +241,7 @@ public class Collapse : SelectingItemsControl,
             _itemsBindingDisposables.Add(collapseItem, disposables);
             
             SetupCollapseBorderThickness(collapseItem, index);
+            ConfigureItemPaddings(collapseItem);
         }
     }
 
@@ -341,6 +360,21 @@ public class Collapse : SelectingItemsControl,
         {
             SetupItemsBorderThickness();
         }
+        if (change.Property == ItemHeaderPaddingProperty ||
+            change.Property == ItemContentPaddingProperty)
+        {
+            if (Items.Count > 0)
+            {
+                for (int i = 0; i < ItemCount; i++)
+                {
+                    var item = Items[i];
+                    if (item is CollapseItem collapseItem)
+                    {
+                        ConfigureItemPaddings(collapseItem);
+                    }
+                }
+            }
+        }
     }
 
     private void SetupEffectiveBorderThickness()
@@ -381,4 +415,17 @@ public class Collapse : SelectingItemsControl,
         base.OnDetachedFromLogicalTree(e);
         this.DisposeTokenBindings();
     }
+    
+    private void ConfigureItemPaddings(CollapseItem collapseItem)
+    {
+        if (collapseItem.HeaderPadding == null)
+        {
+            collapseItem.SetCurrentValue(CollapseItem.HeaderPaddingProperty, ItemHeaderPadding);
+        }
+
+        if (collapseItem.ContentPadding == null)
+        {
+            collapseItem.SetCurrentValue(CollapseItem.ContentPaddingProperty, ItemContentPadding);
+        }
+    }
 }
\ No newline at end of file
diff --git a/src/AtomUI.Controls/Collapse/CollapseItem.cs b/src/AtomUI.Controls/Collapse/CollapseItem.cs
index 4dd29bec8..967f3fdbb 100644
--- a/src/AtomUI.Controls/Collapse/CollapseItem.cs
+++ b/src/AtomUI.Controls/Collapse/CollapseItem.cs
@@ -38,6 +38,12 @@ public class CollapseItem : HeaderedContentControl,
 
     public static readonly StyledProperty<IDataTemplate?> AddOnContentTemplateProperty =
         AvaloniaProperty.Register<CollapseItem, IDataTemplate?>(nameof(AddOnContentTemplate));
+    
+    public static readonly StyledProperty<Thickness?> HeaderPaddingProperty =
+        AvaloniaProperty.Register<CollapseItem, Thickness?>(nameof(HeaderPadding));
+    
+    public static readonly StyledProperty<Thickness?> ContentPaddingProperty =
+        AvaloniaProperty.Register<CollapseItem, Thickness?>(nameof(ContentPadding));
 
     public bool IsSelected
     {
@@ -68,7 +74,18 @@ public class CollapseItem : HeaderedContentControl,
         get => GetValue(AddOnContentTemplateProperty);
         set => SetValue(AddOnContentTemplateProperty, value);
     }
+    
+    public Thickness? HeaderPadding
+    {
+        get => GetValue(HeaderPaddingProperty);
+        set => SetValue(HeaderPaddingProperty, value);
+    }
 
+    public Thickness? ContentPadding
+    {
+        get => GetValue(ContentPaddingProperty);
+        set => SetValue(ContentPaddingProperty, value);
+    }
     #endregion
 
     #region 内部属性定义
@@ -267,6 +284,8 @@ public class CollapseItem : HeaderedContentControl,
                 _expandButton.Transitions = null;
             };
         }
+
+        UpdatePseudoClasses();
     }
 
     protected override void OnAttachedToVisualTree(VisualTreeAttachmentEventArgs e)
@@ -297,6 +316,12 @@ public class CollapseItem : HeaderedContentControl,
             }
         }
 
+        if (change.Property == ContentPaddingProperty ||
+            change.Property == HeaderPaddingProperty)
+        {
+            UpdatePseudoClasses();
+        }
+
         if (IsLoaded)
         {
             if (change.Property == IsMotionEnabledProperty)
@@ -420,4 +445,10 @@ public class CollapseItem : HeaderedContentControl,
             }
         }
     }
+    
+    private void UpdatePseudoClasses()
+    {
+        PseudoClasses.Set(CollapseItemPseudoClass.CustomHeaderPadding, HeaderPadding != null);
+        PseudoClasses.Set(CollapseItemPseudoClass.CustomContentPadding, ContentPadding != null);
+    }
 }
\ No newline at end of file
diff --git a/src/AtomUI.Controls/Collapse/CollapseItemPseudoClass.cs b/src/AtomUI.Controls/Collapse/CollapseItemPseudoClass.cs
new file mode 100644
index 000000000..095153969
--- /dev/null
+++ b/src/AtomUI.Controls/Collapse/CollapseItemPseudoClass.cs
@@ -0,0 +1,7 @@
+namespace AtomUI.Controls;
+
+internal static class CollapseItemPseudoClass
+{
+    public const string CustomHeaderPadding = ":custom-header-padding";
+    public const string CustomContentPadding = ":custom-content-padding";
+}
\ No newline at end of file
diff --git a/src/AtomUI.Controls/Collapse/Themes/CollapseItemTheme.axaml b/src/AtomUI.Controls/Collapse/Themes/CollapseItemTheme.axaml
index b997387a3..43109d4ef 100644
--- a/src/AtomUI.Controls/Collapse/Themes/CollapseItemTheme.axaml
+++ b/src/AtomUI.Controls/Collapse/Themes/CollapseItemTheme.axaml
@@ -12,7 +12,8 @@
                            LastChildFill="True">
                     <Border Name="{x:Static atom:CollapseItemThemeConstants.HeaderDecoratorPart}"
                             DockPanel.Dock="Top"
-                            BorderThickness="{TemplateBinding HeaderBorderThickness}">
+                            BorderThickness="{TemplateBinding HeaderBorderThickness}"
+                            Padding="{TemplateBinding HeaderPadding}">
                         <Grid ColumnDefinitions="Auto, *, Auto, Auto">
                             <atom:IconButton
                                 Name="{x:Static atom:CollapseItemThemeConstants.ExpandButtonPart}"
@@ -42,12 +43,14 @@
                                 Grid.Column="2" />
                         </Grid>
                     </Border>
-                    <atom:LayoutAwareMotionActor Name="{x:Static atom:CollapseItemThemeConstants.ContentMotionActorPart}"
-                                                 ClipToBounds="True">
+                    <atom:LayoutAwareMotionActor
+                        Name="{x:Static atom:CollapseItemThemeConstants.ContentMotionActorPart}"
+                        ClipToBounds="True">
                         <ContentPresenter Name="{x:Static atom:CollapseItemThemeConstants.ContentPresenterPart}"
                                           Content="{TemplateBinding Content, Converter={StaticResource StringToTextBlockConverter}}"
                                           ContentTemplate="{TemplateBinding ContentTemplate}"
-                                          BorderThickness="{TemplateBinding ContentBorderThickness}" />
+                                          BorderThickness="{TemplateBinding ContentBorderThickness}" 
+                                          Padding="{TemplateBinding ContentPadding}"/>
                     </atom:LayoutAwareMotionActor>
                 </DockPanel>
             </ControlTemplate>
@@ -58,87 +61,127 @@
             <Setter Property="Background" Value="{DynamicResource {x:Static atom:CollapseTokenKey.HeaderBg}}" />
             <Setter Property="BorderBrush" Value="{DynamicResource {x:Static atom:SharedTokenKey.ColorBorder}}" />
         </Style>
-        
+
         <Style Selector="^ /template/ ContentPresenter#PART_ContentPresenter">
             <Setter Property="BorderBrush" Value="{DynamicResource {x:Static atom:SharedTokenKey.ColorBorder}}" />
         </Style>
-        
+
         <Style Selector="^ /template/ ContentPresenter#PART_HeaderPresenter">
             <Setter Property="Foreground" Value="{DynamicResource {x:Static atom:SharedTokenKey.ColorTextHeading}}" />
         </Style>
-        
+
         <Style Selector="^ /template/ atom|IconButton#PART_ExpandButton">
             <Setter Property="IconWidth" Value="{DynamicResource {x:Static atom:SharedTokenKey.IconSizeSM}}" />
             <Setter Property="IconHeight" Value="{DynamicResource {x:Static atom:SharedTokenKey.IconSizeSM}}" />
-            <Setter Property="DisabledIconBrush" Value="{DynamicResource {x:Static atom:SharedTokenKey.ColorTextDisabled}}" />
+            <Setter Property="DisabledIconBrush"
+                    Value="{DynamicResource {x:Static atom:SharedTokenKey.ColorTextDisabled}}" />
         </Style>
-        
+
         <Style Selector="^:selected">
             <Style Selector="^ /template/ atom|IconButton#PART_ExpandButton">
                 <Setter Property="RenderTransform" Value="rotate(90deg)" />
             </Style>
         </Style>
+
+        <Style Selector="^:not(:custom-header-padding)">
+            <Style Selector="^[SizeType=Large]">
+                <Style Selector="^ /template/ Border#PART_HeaderDecorator">
+                    <Setter Property="Padding"
+                            Value="{DynamicResource {x:Static atom:CollapseTokenKey.CollapseHeaderPaddingLG}}" />
+                </Style>
+                
+            </Style>
+            <Style Selector="^[SizeType=Middle]">
+                <Style Selector="^ /template/ Border#PART_HeaderDecorator">
+                    <Setter Property="Padding" Value="{DynamicResource {x:Static atom:CollapseTokenKey.HeaderPadding}}" />
+                </Style>
+                
+            </Style>
+            <Style Selector="^[SizeType=Small]">
+                <Style Selector="^ /template/ Border#PART_HeaderDecorator">
+                    <Setter Property="Padding"
+                            Value="{DynamicResource {x:Static atom:CollapseTokenKey.CollapseHeaderPaddingSM}}" />
+                </Style>
+                
+            </Style>
+        </Style>
         
+        <Style Selector="^:not(:custom-content-padding)">
+            <Style Selector="^[SizeType=Large]">
+
+                <Style Selector="^ /template/ ContentPresenter#PART_ContentPresenter">
+                    <Setter Property="Padding"
+                            Value="{DynamicResource {x:Static atom:CollapseTokenKey.CollapseContentPaddingLG}}" />
+                </Style>
+            </Style>
+            <Style Selector="^[SizeType=Middle]">
+                <Style Selector="^ /template/ ContentPresenter#PART_ContentPresenter">
+                    <Setter Property="Padding"
+                            Value="{DynamicResource {x:Static atom:CollapseTokenKey.ContentPadding}}" />
+                </Style>
+            </Style>
+            <Style Selector="^[SizeType=Small]">
+
+                <Style Selector="^ /template/ ContentPresenter#PART_ContentPresenter">
+                    <Setter Property="Padding"
+                            Value="{DynamicResource {x:Static atom:CollapseTokenKey.CollapseContentPaddingSM}}" />
+                </Style>
+            </Style>
+        </Style>
+
         <Style Selector="^[SizeType=Large]">
             <Style Selector="^ /template/ Border#PART_HeaderDecorator">
-                <Setter Property="Padding" Value="{DynamicResource {x:Static atom:CollapseTokenKey.CollapseHeaderPaddingLG}}" />
-                <Setter Property="TextElement.FontSize" Value="{DynamicResource {x:Static atom:SharedTokenKey.FontSizeLG}}" />
-                <Setter Property="TextBlock.LineHeight" Value="{DynamicResource {x:Static atom:SharedTokenKey.FontHeightLG}}" />
-            </Style>
-            
-            <Style Selector="^ /template/ ContentPresenter#PART_ContentPresenter">
-                <Setter Property="Padding" Value="{DynamicResource {x:Static atom:CollapseTokenKey.CollapseContentPaddingLG}}" />
+                <Setter Property="TextElement.FontSize"
+                        Value="{DynamicResource {x:Static atom:SharedTokenKey.FontSizeLG}}" />
+                <Setter Property="TextBlock.LineHeight"
+                        Value="{DynamicResource {x:Static atom:SharedTokenKey.FontHeightLG}}" />
             </Style>
         </Style>
         <Style Selector="^[SizeType=Middle]">
             <Style Selector="^ /template/ Border#PART_HeaderDecorator">
-                <Setter Property="Padding" Value="{DynamicResource {x:Static atom:CollapseTokenKey.HeaderPadding}}" />
-                <Setter Property="TextElement.FontSize" Value="{DynamicResource {x:Static atom:SharedTokenKey.FontSize}}" />
-                <Setter Property="TextBlock.LineHeight" Value="{DynamicResource {x:Static atom:SharedTokenKey.FontHeight}}" />
-            </Style>
-            
-            <Style Selector="^ /template/ ContentPresenter#PART_ContentPresenter">
-                <Setter Property="Padding" Value="{DynamicResource {x:Static atom:CollapseTokenKey.ContentPadding}}" />
+                <Setter Property="TextElement.FontSize"
+                        Value="{DynamicResource {x:Static atom:SharedTokenKey.FontSize}}" />
+                <Setter Property="TextBlock.LineHeight"
+                        Value="{DynamicResource {x:Static atom:SharedTokenKey.FontHeight}}" />
             </Style>
         </Style>
         <Style Selector="^[SizeType=Small]">
             <Style Selector="^ /template/ Border#PART_HeaderDecorator">
-                <Setter Property="Padding" Value="{DynamicResource {x:Static atom:CollapseTokenKey.CollapseHeaderPaddingSM}}" />
-                <Setter Property="TextElement.FontSize" Value="{DynamicResource {x:Static atom:SharedTokenKey.FontSize}}" />
-                <Setter Property="TextBlock.LineHeight" Value="{DynamicResource {x:Static atom:SharedTokenKey.FontHeight}}" />
-            </Style>
-            
-            <Style Selector="^ /template/ ContentPresenter#PART_ContentPresenter">
-                <Setter Property="Padding" Value="{DynamicResource {x:Static atom:CollapseTokenKey.CollapseContentPaddingSM}}" />
+                <Setter Property="TextElement.FontSize"
+                        Value="{DynamicResource {x:Static atom:SharedTokenKey.FontSize}}" />
+                <Setter Property="TextBlock.LineHeight"
+                        Value="{DynamicResource {x:Static atom:SharedTokenKey.FontHeight}}" />
             </Style>
         </Style>
-        
+
         <Style Selector="^[TriggerType=Header]">
             <Style Selector="^ /template/ Border#PART_HeaderDecorator">
                 <Setter Property="Cursor" Value="Hand" />
             </Style>
         </Style>
-        
+
         <Style Selector="^[TriggerType=Icon]">
             <Style Selector="^ /template/ atom|IconButton#PART_ExpandButton">
                 <Setter Property="Cursor" Value="Hand" />
             </Style>
         </Style>
-        
+
         <Style Selector="^[ExpandIconPosition=Start]">
             <Style Selector="^ /template/ atom|IconButton#PART_ExpandButton">
                 <Setter Property="Grid.Column" Value="0" />
-                <Setter Property="Margin" Value="{DynamicResource {x:Static atom:CollapseTokenKey.LeftExpandButtonMargin}}" />
+                <Setter Property="Margin"
+                        Value="{DynamicResource {x:Static atom:CollapseTokenKey.LeftExpandButtonMargin}}" />
             </Style>
         </Style>
-        
+
         <Style Selector="^[ExpandIconPosition=End]">
             <Style Selector="^ /template/ atom|IconButton#PART_ExpandButton">
                 <Setter Property="Grid.Column" Value="3" />
-                <Setter Property="Margin" Value="{DynamicResource {x:Static atom:CollapseTokenKey.RightExpandButtonMargin}}" />
+                <Setter Property="Margin"
+                        Value="{DynamicResource {x:Static atom:CollapseTokenKey.RightExpandButtonMargin}}" />
             </Style>
         </Style>
-        
+
         <Style Selector="^[IsBorderless=True]">
             <Style Selector="^ /template/ ContentPresenter#PART_ContentPresenter">
                 <Setter Property="Background" Value="{DynamicResource {x:Static atom:CollapseTokenKey.HeaderBg}}" />
@@ -150,13 +193,14 @@
                 <Setter Property="Background" Value="{DynamicResource {x:Static atom:CollapseTokenKey.ContentBg}}" />
             </Style>
         </Style>
-        
+
         <Style Selector="^:disabled">
             <Setter Property="Foreground" Value="{DynamicResource {x:Static atom:SharedTokenKey.ColorTextDisabled}}" />
             <Style Selector="^ /template/ Border#PART_HeaderDecorator ContentPresenter">
-                <Setter Property="Foreground" Value="{DynamicResource {x:Static atom:SharedTokenKey.ColorTextDisabled}}" />
+                <Setter Property="Foreground"
+                        Value="{DynamicResource {x:Static atom:SharedTokenKey.ColorTextDisabled}}" />
             </Style>
         </Style>
-        
+
     </ControlTheme>
 </ResourceDictionary>
\ No newline at end of file