diff --git a/FastGithub.UI/FlowChart.xaml b/FastGithub.UI/FlowChart.xaml
index 600b94b..f91b2a4 100644
--- a/FastGithub.UI/FlowChart.xaml
+++ b/FastGithub.UI/FlowChart.xaml
@@ -9,10 +9,10 @@
     <Grid>
         <lvc:CartesianChart Name="flowChart" Series="{Binding Series}" LegendLocation="None" >
             <lvc:CartesianChart.AxisY>
-                <lvc:Axis Title="速率(KB/s)" LabelFormatter="{Binding YFormatter}"></lvc:Axis>
+                <lvc:Axis Foreground="#222"  MinValue="0" LabelFormatter="{Binding YFormatter}"></lvc:Axis>
             </lvc:CartesianChart.AxisY>
             <lvc:CartesianChart.AxisX>
-                <lvc:Axis  Labels="{Binding Labels}"></lvc:Axis>
+                <lvc:Axis Foreground="#222" Labels="{Binding Labels}"></lvc:Axis>
             </lvc:CartesianChart.AxisX>
         </lvc:CartesianChart>
     </Grid>
diff --git a/FastGithub.UI/FlowChart.xaml.cs b/FastGithub.UI/FlowChart.xaml.cs
index 47fad40..7199bd6 100644
--- a/FastGithub.UI/FlowChart.xaml.cs
+++ b/FastGithub.UI/FlowChart.xaml.cs
@@ -31,7 +31,7 @@ namespace FastGithub.UI
 
         public List<string> Labels { get; } = new List<string>();
 
-        public Func<double, string> YFormatter { get; } = value => $"{value:0.00}";
+        public Func<double, string> YFormatter { get; } = value => $"{value:0.00}KB/s";
 
         public FlowChart()
         {