diff --git a/SpineViewer/Models/WorkspaceModel.cs b/SpineViewer/Models/WorkspaceModel.cs
index 534d13e..88d963e 100644
--- a/SpineViewer/Models/WorkspaceModel.cs
+++ b/SpineViewer/Models/WorkspaceModel.cs
@@ -37,6 +37,8 @@ namespace SpineViewer.Models
 
         public uint MaxFps { get; set; } = 30;
 
+        public float Speed { get; set; } = 1f;
+
         public bool ShowAxis { get; set; } = true;
 
         public Color BackgroundColor { get; set; }
diff --git a/SpineViewer/Resources/Strings/en.xaml b/SpineViewer/Resources/Strings/en.xaml
index 6d869ae..c9cc4d0 100644
--- a/SpineViewer/Resources/Strings/en.xaml
+++ b/SpineViewer/Resources/Strings/en.xaml
@@ -104,6 +104,7 @@
     <s:String x:Key="Str_Zoom">Zoom</s:String>
     <s:String x:Key="Str_Rotation">Rotation (Degrees)</s:String>
     <s:String x:Key="Str_MaxFps">Max FPS</s:String>
+    <s:String x:Key="Str_PlaySpeed">Playback Speed</s:String>
     <s:String x:Key="Str_RenderSelectedOnly">Render Selected Only</s:String>
     <s:String x:Key="Str_ShowAxis">Show Axis</s:String>
     <s:String x:Key="Str_BackgroundColor">Background Color</s:String>
diff --git a/SpineViewer/Resources/Strings/ja.xaml b/SpineViewer/Resources/Strings/ja.xaml
index e41ab1a..cce1f50 100644
--- a/SpineViewer/Resources/Strings/ja.xaml
+++ b/SpineViewer/Resources/Strings/ja.xaml
@@ -104,6 +104,7 @@
     <s:String x:Key="Str_Zoom">ズーム</s:String>
     <s:String x:Key="Str_Rotation">回転（度）</s:String>
     <s:String x:Key="Str_MaxFps">最大FPS</s:String>
+    <s:String x:Key="Str_PlaySpeed">再生速度</s:String>
     <s:String x:Key="Str_RenderSelectedOnly">選択のみレンダリング</s:String>
     <s:String x:Key="Str_ShowAxis">座標軸を表示</s:String>
     <s:String x:Key="Str_BackgroundColor">背景色</s:String>
diff --git a/SpineViewer/Resources/Strings/zh.xaml b/SpineViewer/Resources/Strings/zh.xaml
index b6f1399..af3f2c2 100644
--- a/SpineViewer/Resources/Strings/zh.xaml
+++ b/SpineViewer/Resources/Strings/zh.xaml
@@ -104,6 +104,7 @@
     <s:String x:Key="Str_Zoom">缩放</s:String>
     <s:String x:Key="Str_Rotation">旋转（角度）</s:String>
     <s:String x:Key="Str_MaxFps">最大帧率</s:String>
+    <s:String x:Key="Str_PlaySpeed">播放速度</s:String>
     <s:String x:Key="Str_RenderSelectedOnly">仅渲染选中</s:String>
     <s:String x:Key="Str_ShowAxis">显示坐标轴</s:String>
     <s:String x:Key="Str_BackgroundColor">背景颜色</s:String>
diff --git a/SpineViewer/ViewModels/MainWindow/SFMLRendererViewModel.cs b/SpineViewer/ViewModels/MainWindow/SFMLRendererViewModel.cs
index 54a7d60..1b2d58a 100644
--- a/SpineViewer/ViewModels/MainWindow/SFMLRendererViewModel.cs
+++ b/SpineViewer/ViewModels/MainWindow/SFMLRendererViewModel.cs
@@ -140,6 +140,13 @@ namespace SpineViewer.ViewModels.MainWindow
             set => SetProperty(_renderer.MaxFps, value, v => _renderer.MaxFps = value);
         }
 
+        public float Speed
+        {
+            get => _speed;
+            set => SetProperty(ref _speed, Math.Clamp(value, 0.01f, 100f));
+        }
+        private float _speed = 1f;
+
         public bool ShowAxis
         {
             get => _showAxis;
@@ -193,15 +200,15 @@ namespace SpineViewer.ViewModels.MainWindow
         });
         private RelayCommand? _cmd_Restart;
 
-        public RelayCommand Cmd_ForwardStep => _cmd_ForwardStep ??= new(() => 
-        { 
-            lock (_forwardDeltaLock) _forwardDelta += _renderer.MaxFps > 0 ? 1f / _renderer.MaxFps : 0.001f; 
+        public RelayCommand Cmd_ForwardStep => _cmd_ForwardStep ??= new(() =>
+        {
+            lock (_forwardDeltaLock) _forwardDelta += _renderer.MaxFps > 0 ? 1f / _renderer.MaxFps : 0.001f;
         });
         private RelayCommand? _cmd_ForwardStep;
 
         public RelayCommand Cmd_ForwardFast => _cmd_ForwardFast ??= new(() =>
-        { 
-            lock (_forwardDeltaLock) _forwardDelta += _renderer.MaxFps > 0 ? 10f / _renderer.MaxFps : 0.01f; 
+        {
+            lock (_forwardDeltaLock) _forwardDelta += _renderer.MaxFps > 0 ? 10f / _renderer.MaxFps : 0.01f;
         });
         private RelayCommand? _cmd_ForwardFast;
 
@@ -390,7 +397,7 @@ namespace SpineViewer.ViewModels.MainWindow
                             if (_cancelToken?.IsCancellationRequested ?? true) break; // 提前中止
 
                             sp.Update(0); // 避免物理效果出现问题
-                            sp.Update(delta);
+                            sp.Update(delta * _speed);
 
                             // 为选中对象绘制一个半透明背景
                             if (sp.IsSelected)
@@ -426,7 +433,7 @@ namespace SpineViewer.ViewModels.MainWindow
         }
 
         public RendererWorkspaceConfigModel WorkspaceConfig
-        { 
+        {
             // TODO: 背景图片
             get
             {
@@ -441,23 +448,25 @@ namespace SpineViewer.ViewModels.MainWindow
                     FlipX = FlipX,
                     FlipY = FlipY,
                     MaxFps = MaxFps,
+                    Speed = Speed,
                     ShowAxis = ShowAxis,
                     BackgroundColor = BackgroundColor,
                 };
             }
             set
             {
-               ResolutionX = value.ResolutionX;
-               ResolutionY = value.ResolutionY;
-               CenterX = value.CenterX;
-               CenterY = value.CenterY;
-               Zoom = value.Zoom;
-               Rotation = value.Rotation;
-               FlipX = value.FlipX;
-               FlipY = value.FlipY;
-               MaxFps = value.MaxFps;
-               ShowAxis = value.ShowAxis;
-               BackgroundColor = value.BackgroundColor;
+                ResolutionX = value.ResolutionX;
+                ResolutionY = value.ResolutionY;
+                CenterX = value.CenterX;
+                CenterY = value.CenterY;
+                Zoom = value.Zoom;
+                Rotation = value.Rotation;
+                FlipX = value.FlipX;
+                FlipY = value.FlipY;
+                MaxFps = value.MaxFps;
+                Speed = value.Speed;
+                ShowAxis = value.ShowAxis;
+                BackgroundColor = value.BackgroundColor;
             }
         }
     }
diff --git a/SpineViewer/Views/MainWindow.xaml b/SpineViewer/Views/MainWindow.xaml
index b9db125..90625c3 100644
--- a/SpineViewer/Views/MainWindow.xaml
+++ b/SpineViewer/Views/MainWindow.xaml
@@ -693,6 +693,7 @@
                                         <RowDefinition Height="Auto"/>
                                         <RowDefinition Height="Auto"/>
                                         <RowDefinition Height="Auto"/>
+                                        <RowDefinition Height="Auto"/>
                                     </Grid.RowDefinitions>
 
                                     <!-- 水平分辨率 -->
@@ -731,13 +732,17 @@
                                     <Label Grid.Row="8" Grid.Column="0" Content="{DynamicResource Str_MaxFps}"/>
                                     <TextBox Grid.Row="8" Grid.Column="1" Text="{Binding MaxFps}"/>
 
+                                    <!-- 播放速度 -->
+                                    <Label Grid.Row="9" Grid.Column="0" Content="{DynamicResource Str_PlaySpeed}"/>
+                                    <TextBox Grid.Row="9" Grid.Column="1" Text="{Binding Speed}"/>
+
                                     <!-- 显示坐标轴 -->
-                                    <Label Grid.Row="9" Grid.Column="0" Content="{DynamicResource Str_ShowAxis}"/>
-                                    <ToggleButton Grid.Row="9" Grid.Column="1" IsChecked="{Binding ShowAxis}"/>
+                                    <Label Grid.Row="10" Grid.Column="0" Content="{DynamicResource Str_ShowAxis}"/>
+                                    <ToggleButton Grid.Row="10" Grid.Column="1" IsChecked="{Binding ShowAxis}"/>
 
                                     <!-- 背景颜色 -->
-                                    <Label Grid.Row="10" Grid.Column="0" Content="{DynamicResource Str_BackgroundColor}" ToolTip="#AARRGGBB"/>
-                                    <TextBox Grid.Row="10" Grid.Column="1" Text="{Binding BackgroundColor}" ToolTip="#AARRGGBB"/>
+                                    <Label Grid.Row="11" Grid.Column="0" Content="{DynamicResource Str_BackgroundColor}" ToolTip="#AARRGGBB"/>
+                                    <TextBox Grid.Row="11" Grid.Column="1" Text="{Binding BackgroundColor}" ToolTip="#AARRGGBB"/>
                                     
                                     <!-- 背景图案 -->
                                     <!-- 背景图案模式 -->