diff --git a/InvisibleMan-XRay/Factories/WindowFactory.cs b/InvisibleMan-XRay/Factories/WindowFactory.cs
index 2d06061..75fe187 100644
--- a/InvisibleMan-XRay/Factories/WindowFactory.cs
+++ b/InvisibleMan-XRay/Factories/WindowFactory.cs
@@ -38,6 +38,7 @@ public MainWindow CreateMainWindow()
                 isNeedToShowPolicyWindow: IsNeedToShowPolicyWindow,
                 shouldStartHidden: ShouldStartHidden,
                 isNeedToAutoConnect: IsNeedToAutoConnect,
+                getMode: settingsHandler.UserSettings.GetMode,
                 getConfig: configHandler.GetCurrentConfig,
                 loadConfig: core.LoadConfig,
                 enableMode: core.EnableMode,
@@ -56,7 +57,8 @@ public MainWindow CreateMainWindow()
                 onGitHubClick: linkHandler.OpenGitHubRepositoryLink,
                 onBugReportingClick: linkHandler.OpenBugReportingLink,
                 onCustomLinkClick: linkHandler.OpenCustomLink,
-                onChangeRunningStatus: notifyHandler.UpdateConnectionStatus
+                onChangeRunningStatus: notifyHandler.UpdateConnectionStatus,
+                setIndicator: notifyHandler.SetIndicator
             );
             
             return mainWindow;
diff --git a/InvisibleMan-XRay/Handlers/NotifyHandler.cs b/InvisibleMan-XRay/Handlers/NotifyHandler.cs
index 9fa4acc..23539e0 100644
--- a/InvisibleMan-XRay/Handlers/NotifyHandler.cs
+++ b/InvisibleMan-XRay/Handlers/NotifyHandler.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Linq;
 using System.Drawing;
+using System.Drawing.Drawing2D;
 using System.Windows.Forms;
 using System.Collections.Generic;
 
@@ -14,6 +15,7 @@ namespace InvisibleManXRay.Handlers
     public class NotifyHandler : Handler, IDisposable
     {
         private NotifyIcon notifyIcon;
+        private Icon baseIcon;
 
         private Func<Mode> getMode;
         private Action onOpenClick;
@@ -71,6 +73,7 @@ public void InitializeNotifyIcon()
 
             notifyIcon = new NotifyIcon();
             notifyIcon.Icon = GetNotifyIcon();
+            baseIcon = notifyIcon.Icon;
             notifyIcon.Visible = true;
 
             HandleNotifyIconClick();
@@ -201,6 +204,45 @@ private void CheckItem(ToolStripMenuItem item)
             item.Checked = true;
         }
 
+        public void SetIndicator(Mode? mode)
+        {
+            if (notifyIcon == null || baseIcon == null)
+                return;
+
+            if (mode == null)
+            {
+                notifyIcon.Icon = baseIcon;
+                return;
+            }
+
+            Color color = mode == Mode.TUN ? Color.Red : Color.Blue;
+            notifyIcon.Icon = CreateIndicatorIcon(color);
+        }
+        private Icon CreateIndicatorIcon(Color color)
+        {
+            using (Bitmap bmp = baseIcon.ToBitmap())
+            using (Graphics g = Graphics.FromImage(bmp))
+            using (Brush brush = new SolidBrush(color))
+            using (Pen outline = new Pen(Color.White, 1))
+            {
+                int size = bmp.Width / 3 + 2;
+                int x = bmp.Width - size - 1;
+                int y = bmp.Height - size - 1;
+
+                g.SmoothingMode = SmoothingMode.AntiAlias;
+                g.FillEllipse(brush, x, y, size, size);
+                g.DrawEllipse(outline, x, y, size, size);
+
+                IntPtr hIcon = bmp.GetHicon();
+                Icon icon = (Icon)Icon.FromHandle(hIcon).Clone();
+                DestroyIcon(hIcon);
+                return icon;
+
+                [System.Runtime.InteropServices.DllImport("user32.dll")]
+                static extern bool DestroyIcon(IntPtr handle);
+            }
+        }
+
         public void Dispose()
         {
             notifyIcon?.Dispose();
diff --git a/InvisibleMan-XRay/Windows/MainWindow/MainWindow.xaml.cs b/InvisibleMan-XRay/Windows/MainWindow/MainWindow.xaml.cs
index 05dba64..1c3667d 100644
--- a/InvisibleMan-XRay/Windows/MainWindow/MainWindow.xaml.cs
+++ b/InvisibleMan-XRay/Windows/MainWindow/MainWindow.xaml.cs
@@ -29,6 +29,7 @@ private enum ConnectionStatus { STOPPED, WAITING, RUNNING }
         private Func<UpdateWindow> openUpdateWindow;
         private Func<AboutWindow> openAboutWindow;
         private Func<PolicyWindow> openPolicyWindow;
+        private Func<Mode> getMode;
         private Action<string> onRunServer;
         private Action onCancelServer;
         private Action onStopServer;
@@ -38,6 +39,7 @@ private enum ConnectionStatus { STOPPED, WAITING, RUNNING }
         private Action onBugReportingClick;
         private Action<string> onCustomLinkClick;
         private Action<bool> onChangeRunningStatus;
+        private Action<Mode?> setIndicator;
 
         private BackgroundWorker runWorker;
         private BackgroundWorker updateWorker;
@@ -219,6 +221,7 @@ public void Setup(
             Func<bool> isNeedToShowPolicyWindow,
             Func<bool> shouldStartHidden,
             Func<bool> isNeedToAutoConnect,
+            Func<Mode> getMode,
             Func<Config> getConfig,
             Func<Status> loadConfig, 
             Func<Status> enableMode,
@@ -237,12 +240,14 @@ public void Setup(
             Action onGitHubClick,
             Action onBugReportingClick,
             Action<string> onCustomLinkClick,
-            Action<bool> onChangeRunningStatus
+            Action<bool> onChangeRunningStatus,
+            Action<Mode?> setIndicator
         )
         {
             this.isNeedToShowPolicyWindow = isNeedToShowPolicyWindow;
             this.shouldStartHidden = shouldStartHidden;
             this.isNeedToAutoConnect = isNeedToAutoConnect;
+            this.getMode = getMode;
             this.getConfig = getConfig;
             this.loadConfig = loadConfig;
             this.checkForUpdate = checkForUpdate;
@@ -262,6 +267,7 @@ Action<bool> onChangeRunningStatus
             this.onBugReportingClick = onBugReportingClick;
             this.onCustomLinkClick = onCustomLinkClick;
             this.onChangeRunningStatus = onChangeRunningStatus;
+            this.setIndicator = setIndicator;
 
             UpdateUI();
         }
@@ -454,6 +460,8 @@ private void ShowRunStatus()
             statusStop.Visibility = Visibility.Hidden;
             statusWaitForRun.Visibility = Visibility.Hidden;
 
+            setIndicator?.Invoke(getMode?.Invoke());
+
             buttonStop.Visibility = Visibility.Visible;
             buttonCancel.Visibility = Visibility.Hidden;
             buttonRun.Visibility = Visibility.Hidden;
@@ -467,6 +475,8 @@ private void ShowStopStatus()
             statusRun.Visibility = Visibility.Hidden;
             statusWaitForRun.Visibility = Visibility.Hidden;
 
+            setIndicator?.Invoke(null);
+
             buttonRun.Visibility = Visibility.Visible;
             buttonCancel.Visibility = Visibility.Hidden;
             buttonStop.Visibility = Visibility.Hidden;
@@ -480,6 +490,8 @@ private void ShowWaitForRunStatus()
             statusStop.Visibility = Visibility.Hidden;
             statusRun.Visibility = Visibility.Hidden;
 
+            setIndicator?.Invoke(null);
+
             buttonCancel.Visibility = Visibility.Visible;
             buttonRun.Visibility = Visibility.Hidden;
             buttonStop.Visibility = Visibility.Hidden;