diff --git a/QYMessageCenter.Client/PopupWindow.xaml b/QYMessageCenter.Client/PopupWindow.xaml
index a02a59a..9aaf4d2 100644
--- a/QYMessageCenter.Client/PopupWindow.xaml
+++ b/QYMessageCenter.Client/PopupWindow.xaml
@@ -12,6 +12,7 @@
         MaxButtonVisibility="Collapsed"
         CloseButtonVisibility="Collapsed"
         Topmost="True"
+           ShowInTaskbar="False"
         Style="{StaticResource bwstyle}">
     <Window.Resources>
         <SolidColorBrush x:Key="Border.Brush" Color="#D7D7D7"/>