diff --git a/Ink Canvas/MainWindow_cs/MW_Screenshot.cs b/Ink Canvas/MainWindow_cs/MW_Screenshot.cs
index ae7ac7c1..fe5b694f 100644
--- a/Ink Canvas/MainWindow_cs/MW_Screenshot.cs	
+++ b/Ink Canvas/MainWindow_cs/MW_Screenshot.cs	
@@ -162,14 +162,13 @@ namespace Ink_Canvas
 
         internal async Task SaveAreaScreenShotToDesktop()
         {
+            var originalVisibility = Visibility;
             try
             {
-                var originalVisibility = Visibility;
                 Visibility = Visibility.Hidden;
                 await Task.Delay(200);
 
                 var screenshotResult = await ShowScreenshotSelector();
-                Visibility = originalVisibility;
 
                 if (!screenshotResult.HasValue)
                 {
@@ -235,9 +234,12 @@ namespace Ink_Canvas
             }
             catch (Exception ex)
             {
-                Visibility = Visibility.Visible;
                 ShowNotification($"截图失败: {ex.Message}");
             }
+            finally
+            {
+                Visibility = originalVisibility;
+            }
         }
 
         private async Task AddScreenshotToNewWhiteboardPage(ScreenshotResult screenshotResult)
diff --git a/Ink Canvas/Windows/ScreenshotSelectorWindow.xaml.cs b/Ink Canvas/Windows/ScreenshotSelectorWindow.xaml.cs
index 5429f0be..2b373bc7 100644
--- a/Ink Canvas/Windows/ScreenshotSelectorWindow.xaml.cs	
+++ b/Ink Canvas/Windows/ScreenshotSelectorWindow.xaml.cs	
@@ -1112,8 +1112,19 @@ namespace Ink_Canvas
                 int screenHeight = (int)(_currentSelection.Height * dpiScale);
 
                 SelectedArea = new DrawingRectangle(screenX, screenY, screenWidth, screenHeight);
+            }
+
+            if (SelectedArea.HasValue)
+            {
                 DialogResult = true;
             }
+            else
+            {
+                HintText.Text = "请先选择截图区域";
+                HintTextBorder.Visibility = Visibility.Visible;
+                return;
+            }
+
             Close();
         }