diff --git a/apps/desktop-client/src/main/app-settings.ts b/apps/desktop-client/src/main/app-settings.ts
index b0e3cb8..711b91b 100644
--- a/apps/desktop-client/src/main/app-settings.ts
+++ b/apps/desktop-client/src/main/app-settings.ts
@@ -10,46 +10,81 @@ export interface DesktopAppSettings {
 
 export type DesktopAppSettingKey = keyof DesktopAppSettings
 
+interface DesktopAppInternalFlags {
+  hasShownBackgroundBalloon: boolean
+}
+
 const DEFAULT_DESKTOP_APP_SETTINGS: DesktopAppSettings = {
   openAtLogin: false,
   keepRunningInBackground: true,
 }
 
+const DEFAULT_INTERNAL_FLAGS: DesktopAppInternalFlags = {
+  hasShownBackgroundBalloon: false,
+}
+
 let cachedSettings: DesktopAppSettings = { ...DEFAULT_DESKTOP_APP_SETTINGS }
+let cachedFlags: DesktopAppInternalFlags = { ...DEFAULT_INTERNAL_FLAGS }
 
 function settingsPath(): string {
   return join(app.getPath('userData'), 'desktop-settings.json')
 }
 
-function normalizeSettings(input: unknown): DesktopAppSettings {
+function normalizePersistedFile(input: unknown): {
+  settings: DesktopAppSettings
+  flags: DesktopAppInternalFlags
+} {
   if (!input || typeof input !== 'object') {
-    return { ...DEFAULT_DESKTOP_APP_SETTINGS }
+    return {
+      settings: { ...DEFAULT_DESKTOP_APP_SETTINGS },
+      flags: { ...DEFAULT_INTERNAL_FLAGS },
+    }
   }
 
-  const candidate = input as Partial<Record<DesktopAppSettingKey, unknown>>
+  const candidate = input as Partial<
+    Record<DesktopAppSettingKey | keyof DesktopAppInternalFlags, unknown>
+  >
   return {
-    openAtLogin:
-      typeof candidate.openAtLogin === 'boolean'
-        ? candidate.openAtLogin
-        : DEFAULT_DESKTOP_APP_SETTINGS.openAtLogin,
-    keepRunningInBackground:
-      typeof candidate.keepRunningInBackground === 'boolean'
-        ? candidate.keepRunningInBackground
-        : DEFAULT_DESKTOP_APP_SETTINGS.keepRunningInBackground,
+    settings: {
+      openAtLogin:
+        typeof candidate.openAtLogin === 'boolean'
+          ? candidate.openAtLogin
+          : DEFAULT_DESKTOP_APP_SETTINGS.openAtLogin,
+      keepRunningInBackground:
+        typeof candidate.keepRunningInBackground === 'boolean'
+          ? candidate.keepRunningInBackground
+          : DEFAULT_DESKTOP_APP_SETTINGS.keepRunningInBackground,
+    },
+    flags: {
+      hasShownBackgroundBalloon:
+        typeof candidate.hasShownBackgroundBalloon === 'boolean'
+          ? candidate.hasShownBackgroundBalloon
+          : DEFAULT_INTERNAL_FLAGS.hasShownBackgroundBalloon,
+    },
   }
 }
 
-function readPersistedSettings(): DesktopAppSettings {
+function readPersistedFile(): {
+  settings: DesktopAppSettings
+  flags: DesktopAppInternalFlags
+} {
   try {
-    return normalizeSettings(JSON.parse(readFileSync(settingsPath(), 'utf8')))
+    return normalizePersistedFile(JSON.parse(readFileSync(settingsPath(), 'utf8')))
   } catch {
-    return { ...DEFAULT_DESKTOP_APP_SETTINGS }
+    return {
+      settings: { ...DEFAULT_DESKTOP_APP_SETTINGS },
+      flags: { ...DEFAULT_INTERNAL_FLAGS },
+    }
   }
 }
 
-function persistSettings(settings: DesktopAppSettings): void {
+function persistFile(): void {
   try {
-    writeFileSync(settingsPath(), JSON.stringify(settings), 'utf8')
+    writeFileSync(
+      settingsPath(),
+      JSON.stringify({ ...cachedSettings, ...cachedFlags }),
+      'utf8',
+    )
   } catch (error) {
     console.warn('[desktop-settings] persist failed', error)
   }
@@ -64,12 +99,38 @@ function readSystemOpenAtLogin(fallback: boolean): boolean {
   }
 }
 
+// Platform-specific login-item application.
+//
+// macOS — `setLoginItemSettings({ openAtLogin })` registers a LaunchAgent via
+// the ServiceManagement framework. `path`/`args` are ignored on darwin; the
+// system always launches the bundled .app. We keep `openAsHidden: false`
+// because the user wants the main window to appear at login.
+//
+// Windows — `setLoginItemSettings` writes to
+// `HKCU\Software\Microsoft\Windows\CurrentVersion\Run`. In dev the registry
+// would point at electron.exe, so we explicitly pass `path: process.execPath`
+// and an empty `args: []` so the production NSIS-installed exe is registered
+// correctly. No `--hidden` flag because the user wants a normal window at
+// startup.
+//
+// Linux — `setLoginItemSettings` is a no-op in Electron; we silently accept
+// the value but the OS will not honor it.
 function applyOpenAtLogin(openAtLogin: boolean): boolean {
   try {
-    app.setLoginItemSettings({
-      openAtLogin,
-      openAsHidden: false,
-    })
+    if (process.platform === 'darwin') {
+      app.setLoginItemSettings({
+        openAtLogin,
+        openAsHidden: false,
+      })
+    } else if (process.platform === 'win32') {
+      app.setLoginItemSettings({
+        openAtLogin,
+        path: process.execPath,
+        args: [],
+      })
+    } else {
+      app.setLoginItemSettings({ openAtLogin })
+    }
     return readSystemOpenAtLogin(openAtLogin)
   } catch (error) {
     console.warn('[desktop-settings] apply login item failed', error)
@@ -78,12 +139,13 @@ function applyOpenAtLogin(openAtLogin: boolean): boolean {
 }
 
 export function initDesktopAppSettings(): DesktopAppSettings {
-  cachedSettings = readPersistedSettings()
+  const { settings, flags } = readPersistedFile()
   cachedSettings = {
-    ...cachedSettings,
-    openAtLogin: applyOpenAtLogin(cachedSettings.openAtLogin),
+    ...settings,
+    openAtLogin: applyOpenAtLogin(settings.openAtLogin),
   }
-  persistSettings(cachedSettings)
+  cachedFlags = flags
+  persistFile()
   return getDesktopAppSettings()
 }
 
@@ -109,6 +171,18 @@ export function setDesktopAppSetting(
   }
 
   cachedSettings = next
-  persistSettings(cachedSettings)
+  persistFile()
   return getDesktopAppSettings()
 }
+
+export function hasShownBackgroundBalloon(): boolean {
+  return cachedFlags.hasShownBackgroundBalloon
+}
+
+export function markBackgroundBalloonShown(): void {
+  if (cachedFlags.hasShownBackgroundBalloon) {
+    return
+  }
+  cachedFlags = { ...cachedFlags, hasShownBackgroundBalloon: true }
+  persistFile()
+}
diff --git a/apps/desktop-client/src/main/bootstrap.ts b/apps/desktop-client/src/main/bootstrap.ts
index 6b71abc..e59a0ab 100644
--- a/apps/desktop-client/src/main/bootstrap.ts
+++ b/apps/desktop-client/src/main/bootstrap.ts
@@ -20,7 +20,9 @@ import {
 } from './app-issue-indicator'
 import {
   getDesktopAppSettings,
+  hasShownBackgroundBalloon,
   initDesktopAppSettings,
+  markBackgroundBalloonShown,
   setDesktopAppSetting,
   type DesktopAppSettingKey,
 } from './app-settings'
@@ -50,7 +52,7 @@ import {
   listDesktopPublishTasks,
   retryDesktopPublishTask,
 } from './transport/api-client'
-import { initTray } from './tray'
+import { initTray, showTrayBalloon } from './tray'
 import { STANDARD_USER_AGENT } from './user-agent'
 import { startHotViewReaper } from './view-pool'
 
@@ -64,6 +66,14 @@ app.commandLine.appendSwitch('disable-background-networking')
 app.commandLine.appendSwitch('remote-debugging-port', String(getPlaywrightCDPPort()))
 app.userAgentFallback = STANDARD_USER_AGENT
 
+// Windows 10+ routes tray.displayBalloon through the Toast Notification API,
+// which requires a registered AppUserModelID. electron-builder writes this on
+// the Start Menu shortcut at install time, but we set it explicitly so dev
+// runs and edge-case installs also fire the balloon reliably.
+if (process.platform === 'win32') {
+  app.setAppUserModelId('com.geo.rankly.desktop')
+}
+
 const isDevelopmentRuntime = !app.isPackaged
 
 function silencePackagedConsole(): void {
@@ -598,6 +608,12 @@ async function createAppWindow(mode: WindowMode): Promise<ElectronBrowserWindow>
     ) {
       event.preventDefault()
       window.hide()
+      // Windows: notify users once that the app is still running in the tray.
+      // displayBalloon is a no-op on macOS/Linux so the guard is in tray.ts.
+      if (process.platform === 'win32' && !hasShownBackgroundBalloon()) {
+        showTrayBalloon('省心推已最小化到托盘', '应用仍在后台运行，右键托盘图标可退出。')
+        markBackgroundBalloonShown()
+      }
     }
   })
 
diff --git a/apps/desktop-client/src/main/tray.ts b/apps/desktop-client/src/main/tray.ts
index d90d7cd..2476134 100644
--- a/apps/desktop-client/src/main/tray.ts
+++ b/apps/desktop-client/src/main/tray.ts
@@ -47,6 +47,28 @@ function formatIssueCount(count: number): string {
   return count > 99 ? '99+' : String(count)
 }
 
+// Windows-only: tray.displayBalloon shows a system toast next to the tray
+// icon. macOS and Linux ignore this call (Electron returns silently), so the
+// guard here is just to avoid the no-op log noise on non-Windows.
+export function showTrayBalloon(title: string, content: string): void {
+  if (process.platform !== 'win32') {
+    return
+  }
+  if (!tray || tray.isDestroyed()) {
+    return
+  }
+  try {
+    tray.displayBalloon({
+      title,
+      content,
+      icon: createTrayIcon('normal'),
+      iconType: 'custom',
+    })
+  } catch (error) {
+    console.warn('[desktop-tray] displayBalloon failed', error)
+  }
+}
+
 export function updateTrayIssueIndicator(issueCount: number): void {
   if (!tray || tray.isDestroyed()) {
     return