diff --git a/scripts/deploy.py b/scripts/deploy.py
index 9529bae..08347d4 100644
--- a/scripts/deploy.py
+++ b/scripts/deploy.py
@@ -3,12 +3,17 @@
 
 from __future__ import annotations
 
+import argparse
+import json
 import os
 import platform
 import secrets
 import shutil
 import subprocess
 import sys
+import time
+import urllib.error
+import urllib.request
 from pathlib import Path
 
 ROOT = Path(__file__).resolve().parent.parent
@@ -183,7 +188,96 @@ def smoke_test(py_exe: str) -> None:
     _ok("应用启动检查通过")
 
 
-def print_summary() -> None:
+def ensure_logs_dir() -> None:
+    logs = ROOT / "logs"
+    logs.mkdir(parents=True, exist_ok=True)
+
+
+def pm2_has_app(name: str = "nav-site") -> bool:
+    pm2 = shutil.which("pm2")
+    if not pm2:
+        return False
+    try:
+        proc = subprocess.run(
+            [pm2, "jlist"],
+            check=True,
+            capture_output=True,
+            text=True,
+        )
+        apps = json.loads(proc.stdout or "[]")
+        return any(app.get("name") == name for app in apps)
+    except (subprocess.CalledProcessError, json.JSONDecodeError, OSError):
+        return False
+
+
+def systemd_unit_ready(name: str = "nav-site") -> bool:
+    systemctl = shutil.which("systemctl")
+    if not systemctl:
+        return False
+    try:
+        proc = subprocess.run(
+            [systemctl, "list-unit-files", f"{name}.service", "--no-pager", "--no-legend"],
+            check=True,
+            capture_output=True,
+            text=True,
+        )
+        return bool((proc.stdout or "").strip())
+    except (subprocess.CalledProcessError, OSError):
+        return False
+
+
+def wait_for_http(port: str, timeout: float = 15.0) -> bool:
+    url = f"http://127.0.0.1:{port}/login"
+    deadline = time.time() + timeout
+    while time.time() < deadline:
+        try:
+            with urllib.request.urlopen(url, timeout=2) as resp:
+                if resp.status == 200:
+                    return True
+        except (urllib.error.URLError, TimeoutError, OSError):
+            time.sleep(0.8)
+    return False
+
+
+def start_service(port: str) -> str | None:
+    """尝试自动启动服务，返回启动方式描述；失败返回 None。"""
+    ensure_logs_dir()
+    pm2 = shutil.which("pm2")
+    ecosystem = ROOT / "ecosystem.config.cjs"
+
+    if pm2 and ecosystem.is_file():
+        if pm2_has_app("nav-site"):
+            subprocess.run(
+                [pm2, "restart", "nav-site", "--update-env"],
+                check=True,
+                cwd=ROOT,
+            )
+            mode = "pm2 restart nav-site"
+        else:
+            subprocess.run(
+                [pm2, "start", str(ecosystem)],
+                check=True,
+                cwd=ROOT,
+            )
+            mode = "pm2 start ecosystem.config.cjs"
+        subprocess.run([pm2, "save"], cwd=ROOT, check=False)
+        if wait_for_http(port):
+            return mode
+        _warn("PM2 已启动进程，但健康检查未通过，请执行 pm2 logs nav-site 排查")
+        return mode
+
+    systemctl = shutil.which("systemctl")
+    if systemctl and systemd_unit_ready("nav-site"):
+        subprocess.run([systemctl, "enable", "--now", "nav-site"], check=True)
+        if wait_for_http(port):
+            return "systemctl enable --now nav-site"
+        _warn("systemd 已启动 nav-site，但健康检查未通过，请执行 journalctl -u nav-site 排查")
+        return "systemctl enable --now nav-site"
+
+    return None
+
+
+def print_summary(started_via: str | None = None) -> None:
     port = os.environ.get("NAV_PORT", "5070")
     print()
     print("=" * 50)
@@ -192,16 +286,33 @@ def print_summary() -> None:
     print("  默认账号: admin / admin123")
     print("  生产环境请尽快在「系统设置」中修改密码")
     print()
-    print("启动方式（任选其一）：")
-    if platform.system() == "Windows":
-        print(f"  {venv_python()} app.py")
+    if started_via:
+        print(f"  服务状态: 已自动启动（{started_via}）")
+        if shutil.which("pm2"):
+            print("  查看状态: pm2 status")
+            print("  查看日志: pm2 logs nav-site")
+            print("  开机自启: pm2 save && pm2 startup  # 按提示执行一次 sudo 命令")
     else:
-        print(f"  {venv_python()} app.py")
-        print("  pm2 start ecosystem.config.cjs")
+        print("  服务状态: 未自动启动（未检测到 pm2 / systemd nav-site）")
+        print("  手动启动：")
+        print(f"    {venv_python()} app.py")
+        if shutil.which("pm2"):
+            print("    pm2 start ecosystem.config.cjs")
     print("=" * 50)
 
 
+def parse_args() -> argparse.Namespace:
+    parser = argparse.ArgumentParser(description="LocalNav 项目内部署")
+    parser.add_argument(
+        "--no-start",
+        action="store_true",
+        help="仅安装依赖与配置，不自动启动服务",
+    )
+    return parser.parse_args()
+
+
 def main() -> None:
+    args = parse_args()
     if not (ROOT / "app.py").is_file():
         _fail(
             "请在 LocalNav 项目目录内运行，或使用 scripts/install.py 自动克隆安装：\n"
@@ -219,7 +330,20 @@ def main() -> None:
     py_exe = ensure_venv(base_py)
     install_requirements(py_exe)
     smoke_test(py_exe)
-    print_summary()
+
+    started_via = None
+    if not args.no_start:
+        port = os.environ.get("NAV_PORT", "5070")
+        try:
+            started_via = start_service(port)
+            if started_via:
+                _ok(f"服务已自动启动（{started_via}）")
+            else:
+                _warn("未能自动启动，请按下方说明手动启动")
+        except subprocess.CalledProcessError as exc:
+            _warn(f"自动启动失败: {exc}")
+
+    print_summary(started_via)
 
 
 if __name__ == "__main__":
diff --git a/部署与使用说明.md b/部署与使用说明.md
index 60af8af..77bff6d 100644
--- a/部署与使用说明.md
+++ b/部署与使用说明.md
@@ -130,8 +130,9 @@ python3 scripts/install.py --repo https://git.bz121.com/dekun/LocalNav.git --dir
 | 默认账号 | `NAV_ADMIN_USERNAME=admin`、`NAV_ADMIN_PASSWORD=admin123` |
 | 中控自动登录 | 默认 `NAV_HUB_AUTO_LOGIN=1` |
 | 内网 Cookie | 默认 `NAV_COOKIES_INSECURE_HTTP=1`（便于 `http://IP:端口` 访问） |
+| **自动启动** | 若检测到 **pm2**：`pm2 start` 或 `pm2 restart nav-site`；否则尝试 **systemd** `nav-site` 服务 |
 
-**注意：** 脚本不会覆盖 `.env` 中已有的 `NAV_SECRET_KEY` 等配置。生产环境部署后请尽快登录并在「系统设置」中修改密码。
+**注意：** 脚本不会覆盖 `.env` 中已有的 `NAV_SECRET_KEY` 等配置。生产环境部署后请尽快登录并在「系统设置」中修改密码。仅安装不启动可加 `--no-start`。
 
 ### 5.3 已安装后的更新