diff --git a/src-tauri/src/commands.rs b/src-tauri/src/commands.rs
index 182aaf1..5c5dee9 100644
--- a/src-tauri/src/commands.rs
+++ b/src-tauri/src/commands.rs
@@ -309,7 +309,7 @@ pub fn get_domain_usage_stats(
 // ============================================================================
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
-#[serde(rename_all = "camelCase")]
+#[serde(rename_all = "camelCase", default)]
 pub struct AppSettings {
     pub theme: String,
     pub auto_start: bool,
@@ -317,6 +317,7 @@ pub struct AppSettings {
     pub polling_interval: u64, // seconds
     pub idle_threshold: u64,   // seconds
     pub track_urls: bool,
+    pub hide_dock: bool,
 }
 
 impl Default for AppSettings {
@@ -328,6 +329,7 @@ impl Default for AppSettings {
             polling_interval: 3,
             idle_threshold: 300,
             track_urls: false,
+            hide_dock: false,
         }
     }
 }
@@ -556,6 +558,32 @@ pub fn set_autostart(app: tauri::AppHandle, enabled: bool) -> Result<(), String>
     }
 }
 
+// ============================================================================
+// Dock Visibility Commands
+// ============================================================================
+
+/// Set Dock icon visibility (macOS only)
+#[tauri::command]
+pub fn set_dock_visible(app_handle: tauri::AppHandle, visible: bool) -> Result<(), String> {
+    #[cfg(target_os = "macos")]
+    {
+        use tauri::ActivationPolicy;
+        let policy = if visible {
+            ActivationPolicy::Regular
+        } else {
+            ActivationPolicy::Accessory
+        };
+        app_handle
+            .set_activation_policy(policy)
+            .map_err(|e| e.to_string())?;
+    }
+    #[cfg(not(target_os = "macos"))]
+    {
+        let _ = (app_handle, visible);
+    }
+    Ok(())
+}
+
 // ============================================================================
 // System Commands
 // ============================================================================
diff --git a/src-tauri/src/lib.rs b/src-tauri/src/lib.rs
index 999547b..3c332dd 100644
--- a/src-tauri/src/lib.rs
+++ b/src-tauri/src/lib.rs
@@ -66,6 +66,20 @@ pub fn run() {
                 tracker,
             });
 
+            // Restore Dock visibility from saved settings
+            #[cfg(target_os = "macos")]
+            {
+                let settings_db = Database::new(db_path.to_str().unwrap())
+                    .expect("Failed to open database for settings");
+                if let Ok(settings) = settings_db.get_settings() {
+                    if settings.hide_dock {
+                        use tauri::ActivationPolicy;
+                        let _ = app.handle().set_activation_policy(ActivationPolicy::Accessory);
+                        log::info!("Dock icon hidden (restored from settings)");
+                    }
+                }
+            }
+
             log::info!("Timlyzer initialized successfully");
 
             Ok(())
@@ -110,6 +124,8 @@ pub fn run() {
             commands::export_to_csv,
             commands::export_to_json,
             commands::update_tray_menu,
+            // Dock commands
+            commands::set_dock_visible,
             // Autostart commands
             commands::get_autostart,
             commands::set_autostart,
diff --git a/src/i18n/locales/en-US/settings.json b/src/i18n/locales/en-US/settings.json
index a401f6c..7c3d59f 100644
--- a/src/i18n/locales/en-US/settings.json
+++ b/src/i18n/locales/en-US/settings.json
@@ -13,6 +13,8 @@
     "language": "Language",
     "autostart": "Start on boot",
     "autostartDesc": "Automatically start Timlyzer when you log in",
+    "hideDock": "Hide Dock icon",
+    "hideDockDesc": "Hide the app from Dock and only show in the system tray",
     "closeAction": "When closing window",
     "minimize": "Minimize to tray",
     "ask": "Ask every time",
diff --git a/src/i18n/locales/zh-CN/settings.json b/src/i18n/locales/zh-CN/settings.json
index 8b5bf77..5329754 100644
--- a/src/i18n/locales/zh-CN/settings.json
+++ b/src/i18n/locales/zh-CN/settings.json
@@ -13,6 +13,8 @@
     "language": "语言",
     "autostart": "开机自启动",
     "autostartDesc": "登录时自动启动 Timlyzer",
+    "hideDock": "隐藏 Dock 图标",
+    "hideDockDesc": "从 Dock 中隐藏应用，仅在系统托盘中显示",
     "closeAction": "当关闭窗口时",
     "minimize": "最小化到托盘",
     "ask": "每次询问",
diff --git a/src/pages/SettingsPage.tsx b/src/pages/SettingsPage.tsx
index 7a90824..f14b862 100644
--- a/src/pages/SettingsPage.tsx
+++ b/src/pages/SettingsPage.tsx
@@ -27,6 +27,7 @@ import {
   exportApi,
   trackItemApi,
   autostartApi,
+  dockApi,
   type TrackedApp,
   type DatabaseInfo,
   type AppSettings,
@@ -49,6 +50,7 @@ export function SettingsPage() {
   const [isSaving, setIsSaving] = useState(false);
   const [exportMessage, setExportMessage] = useState("");
   const [autostartEnabled, setAutostartEnabled] = useState(false);
+  const [isMacOS] = useState(() => navigator.userAgent.includes("Macintosh"));
 
   // Load settings store for theme
   const { theme, setTheme } = useSettingsStore();
@@ -288,6 +290,41 @@ export function SettingsPage() {
                   </button>
                 </label>
 
+                {/* Hide Dock Icon (macOS only) */}
+                {isMacOS && (
+                  <label className="flex items-center justify-between cursor-pointer">
+                    <div>
+                      <div className="font-medium">{t("appearance.hideDock")}</div>
+                      <div className="text-sm text-slate-500">
+                        {t("appearance.hideDockDesc")}
+                      </div>
+                    </div>
+                    <button
+                      onClick={async () => {
+                        if (!settings) return;
+                        const newValue = !settings.hideDock;
+                        await dockApi.setVisible(!newValue);
+                        const updated = { ...settings, hideDock: newValue };
+                        setSettings(updated);
+                        await settingsApi.saveSettings(updated);
+                      }}
+                      className={cn(
+                        "relative w-11 h-6 rounded-full transition-colors",
+                        settings?.hideDock
+                          ? "bg-primary-500"
+                          : "bg-slate-200 dark:bg-slate-700"
+                      )}
+                    >
+                      <div
+                        className={cn(
+                          "absolute top-1 w-4 h-4 rounded-full bg-white transition-transform",
+                          settings?.hideDock ? "translate-x-6" : "translate-x-1"
+                        )}
+                      />
+                    </button>
+                  </label>
+                )}
+
                 {/* Close Action */}
                 <div>
                   <label className="text-sm font-medium mb-2 block">
diff --git a/src/services/tauri-api.ts b/src/services/tauri-api.ts
index ca84d96..fdcd524 100644
--- a/src/services/tauri-api.ts
+++ b/src/services/tauri-api.ts
@@ -288,6 +288,7 @@ export interface AppSettings {
   pollingInterval: number;
   idleThreshold: number;
   trackUrls: boolean;
+  hideDock: boolean;
 }
 
 export interface TrackedApp {
@@ -327,6 +328,7 @@ export const settingsApi = {
         pollingInterval: 3,
         idleThreshold: 300,
         trackUrls: false,
+        hideDock: false,
       };
     }
   },
@@ -458,6 +460,23 @@ export const autostartApi = {
   },
 };
 
+// ============================================================================
+// Dock API
+// ============================================================================
+
+export const dockApi = {
+  /**
+   * Set Dock icon visibility (macOS only)
+   */
+  setVisible: async (visible: boolean): Promise<void> => {
+    try {
+      await invoke("set_dock_visible", { visible });
+    } catch (error) {
+      console.error("setDockVisible error:", error);
+    }
+  },
+};
+
 // ============================================================================
 // App control API
 // ============================================================================