diff --git a/src/Khd.Core.Wpf/Form/FormBoardT.xaml.cs b/src/Khd.Core.Wpf/Form/FormBoardT.xaml.cs
index e4c1225..aac489a 100644
--- a/src/Khd.Core.Wpf/Form/FormBoardT.xaml.cs
+++ b/src/Khd.Core.Wpf/Form/FormBoardT.xaml.cs
@@ -123,7 +123,7 @@ namespace Khd.Core.Wpf.Form
         private void FormBoard_Loaded(object sender, RoutedEventArgs e)
         {
             InitializeData(1);
-            
+            QueryPositionCombox.SelectedIndex = 0; // 设置默认选择为 "南侧"
             try
             {
                 itemsControlItems = new ObservableCollection<SelectItemModel>();