diff --git a/Utils/DnsFlusher.cs b/Utils/DnsFlusher.cs
new file mode 100644
index 0000000..e6353bb
--- /dev/null
+++ b/Utils/DnsFlusher.cs
@@ -0,0 +1,11 @@
+using System.Runtime.InteropServices;
+
+namespace Sheas_Cealer.Utils;
+
+internal static partial class DnsFlusher
+{
+    [LibraryImport("dnsapi.dll")]
+    private static partial void DnsFlushResolverCache();
+
+    internal static void FlushDns() => DnsFlushResolverCache();
+}
diff --git a/Wins/MainWin.xaml.cs b/Wins/MainWin.xaml.cs
index 16263e4..b72be1b 100644
--- a/Wins/MainWin.xaml.cs
+++ b/Wins/MainWin.xaml.cs
@@ -335,6 +335,8 @@ public partial class MainWin : Window
 
                     if (sender == null)
                         MihomoButtonHoldTimer_Tick(null, EventArgs.Empty);
+
+                    DnsFlusher.FlushDns();
                 }
                 finally
                 {