diff --git a/MainWindow.xaml b/MainWindow.xaml
index 374fde3..b4552ef 100644
--- a/MainWindow.xaml
+++ b/MainWindow.xaml
@@ -68,7 +68,8 @@
             <TextBox HorizontalAlignment="Left" Height="30" Margin="270,75,0,0" TextWrapping="Wrap" Text="" VerticalAlignment="Top" Width="130" FontSize="20"/>
             <TextBlock HorizontalAlignment="Left" Height="35" Margin="0,110,0,0" TextWrapping="Wrap" Text="浴量(L):" VerticalAlignment="Top" Width="90" FontSize="20"/>
             <TextBox HorizontalAlignment="Left" Height="30" Margin="90,110,0,0" TextWrapping="Wrap" Text="" VerticalAlignment="Top" Width="125" FontSize="20"/>
-
+            <TextBlock HorizontalAlignment="Left" Height="35" Margin="220,110,0,0" TextWrapping="Wrap" Text="产品:" VerticalAlignment="Top" Width="90" FontSize="20"/>
+            <ComboBox HorizontalAlignment="Left" Height="30" Margin="270,110,0,0" Text="" VerticalAlignment="Top" Width="130" FontSize="20" IsEditable="True"/>
         </Grid>
         <DataGrid x:Name="Selectio" AlternationCount="2" IsReadOnly="False" 
                   Margin="5,300,5,100" d:ItemsSource="{d:SampleData ItemCount=200}" AutoGenerateColumns="False" MinColumnWidth="30"