diff --git a/frontend/src/App.vue b/frontend/src/App.vue
index 125c9a8..cf3c3b2 100644
--- a/frontend/src/App.vue
+++ b/frontend/src/App.vue
@@ -1,6 +1,7 @@
 <script setup lang="ts">
 import { RouterLink, RouterView, useRouter } from 'vue-router'
 import { useI18n } from 'vue-i18n'
+import { ref, onMounted } from 'vue'
 import { useAuthStore } from '@/stores/auth'
 import { toggleLocale } from '@/i18n'
 import logo from '@/assets/logo.svg'
@@ -9,6 +10,20 @@ const router = useRouter()
 const authStore = useAuthStore()
 const { t, locale } = useI18n()
 
+const versionInfo = ref<{ commit: string; commitTime: string } | null>(null)
+
+onMounted(async () => {
+  try {
+    const res = await fetch('/api/version')
+    if (res.ok) {
+      const data = await res.json()
+      versionInfo.value = { commit: data.commit, commitTime: data.commit_time }
+    }
+  } catch {
+    // 版本信息获取失败时静默处理，footer 仅显示版权
+  }
+})
+
 function handleLogout() {
   authStore.logout()
   router.push('/')
@@ -16,7 +31,6 @@ function handleLogout() {
 
 const navLinks = [
   { to: '/', label: 'nav.home' },
-  { to: '/about', label: 'nav.about' },
 ]
 </script>
 
@@ -39,6 +53,17 @@ const navLinks = [
           >
             {{ t(link.label) }}
           </RouterLink>
+          <a
+            href="https://github.com/wuwenfengmi1998/lmvpn_server"
+            target="_blank"
+            rel="noopener noreferrer"
+            class="flex items-center gap-1.5 px-3 py-1.5 rounded-md text-sm font-medium transition-colors hover:bg-sky-500/40"
+          >
+            <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor" class="w-4 h-4">
+              <path d="M12 .5C5.37.5 0 5.78 0 12.292c0 5.211 3.438 9.63 8.205 11.188.6.111.82-.254.82-.567 0-.28-.01-1.022-.015-2.005-3.338.711-4.042-1.582-4.042-1.582-.546-1.361-1.335-1.725-1.335-1.725-1.087-.731.084-.716.084-.716 1.205.082 1.838 1.215 1.838 1.215 1.07 1.803 2.809 1.282 3.495.981.108-.763.417-1.282.76-1.577-2.665-.295-5.466-1.309-5.466-5.827 0-1.287.465-2.339 1.235-3.164-.135-.298-.54-1.497.105-3.121 0 0 1.005-.316 3.3 1.209.96-.262 1.98-.392 3-.398 1.02.006 2.04.136 3 .398 2.28-1.525 3.285-1.209 3.285-1.209.645 1.624.24 2.823.12 3.121.765.825 1.23 1.877 1.23 3.164 0 4.53-2.805 5.527-5.475 5.817.42.354.81 1.077.81 2.182 0 1.578-.015 2.846-.015 3.229 0 .315.21.687.825.57C20.565 21.917 24 17.495 24 12.292 24 5.78 18.627.5 12 .5z" />
+            </svg>
+            GitHub
+          </a>
           <template v-if="authStore.isLoggedIn">
             <RouterLink
               to="/profile"
@@ -95,6 +120,9 @@ const navLinks = [
     <footer class="bg-slate-800 text-slate-400 py-6 text-center text-sm">
       <div class="max-w-6xl mx-auto px-4">
         <p>&copy; {{ new Date().getFullYear() }} LmVPN. All rights reserved.</p>
+        <p v-if="versionInfo" class="mt-1 text-slate-500">
+          {{ t('footer.lastCommit') }}: {{ versionInfo.commitTime }} · {{ versionInfo.commit }}
+        </p>
       </div>
     </footer>
   </div>
diff --git a/frontend/src/locales/en.ts b/frontend/src/locales/en.ts
index ca03005..1e3e1be 100644
--- a/frontend/src/locales/en.ts
+++ b/frontend/src/locales/en.ts
@@ -149,6 +149,9 @@ export default {
     selectUserAndIp: 'Please select a user and fill in at least one IP address',
     confirmDeleteReservation: 'Delete this reservation?',
   },
+  footer: {
+    lastCommit: 'Last commit',
+  },
   home: {
     tagline: 'Secure, fast, and reliable VPN tunnel management system',
     secureTunnel: 'Secure Tunnel',
diff --git a/frontend/src/locales/zh.ts b/frontend/src/locales/zh.ts
index cc95872..3966481 100644
--- a/frontend/src/locales/zh.ts
+++ b/frontend/src/locales/zh.ts
@@ -148,6 +148,9 @@ export default {
     selectUserAndIp: '请选择用户并至少填写一个 IP 地址',
     confirmDeleteReservation: '确认删除该预留？',
   },
+  footer: {
+    lastCommit: '最后提交',
+  },
   home: {
     tagline: '安全、快速、可靠的 VPN 隧道管理系统',
     secureTunnel: '安全隧道',
diff --git a/install_linux.sh b/install_linux.sh
index 476937f..9cdc30a 100755
--- a/install_linux.sh
+++ b/install_linux.sh
@@ -25,7 +25,11 @@ npm run build
 cd ..
 
 echo ">>> 编译 Go 后端..."
-go build -o lmvpn .
+VERSION=$(git describe --tags --always 2>/dev/null || echo "dev")
+COMMIT=$(git rev-parse --short HEAD)
+COMMIT_TIME=$(git log -1 --format=%cI)
+BUILD_TIME=$(date -u +%Y-%m-%dT%H:%M:%SZ)
+go build -ldflags "-X lmvpn/internal/version.Version=$VERSION -X lmvpn/internal/version.Commit=$COMMIT -X lmvpn/internal/version.CommitTime=$COMMIT_TIME -X lmvpn/internal/version.BuildTime=$BUILD_TIME" -o lmvpn .
 
 echo ">>> 创建 lmvpn 系统用户..."
 if ! id lmvpn &>/dev/null; then
diff --git a/internal/handler/version.go b/internal/handler/version.go
new file mode 100644
index 0000000..30b3e9f
--- /dev/null
+++ b/internal/handler/version.go
@@ -0,0 +1,25 @@
+package handler
+
+import (
+	"net/http"
+
+	"lmvpn/internal/version"
+
+	"github.com/gin-gonic/gin"
+)
+
+type versionResponse struct {
+	Version    string `json:"version"`
+	Commit     string `json:"commit"`
+	CommitTime string `json:"commit_time"`
+	BuildTime  string `json:"build_time"`
+}
+
+func GetVersion(c *gin.Context) {
+	c.JSON(http.StatusOK, versionResponse{
+		Version:    version.Version,
+		Commit:     version.Commit,
+		CommitTime: version.CommitTime,
+		BuildTime:  version.BuildTime,
+	})
+}
diff --git a/internal/router/router.go b/internal/router/router.go
index 8163b81..e583548 100644
--- a/internal/router/router.go
+++ b/internal/router/router.go
@@ -15,6 +15,7 @@ func Setup(r *gin.Engine) {
 	r.GET("/ws", vpn.HandleWS)
 
 	r.POST("/api/login", middleware.LoginRateLimit(), handler.Login)
+	r.GET("/api/version", handler.GetVersion)
 
 	auth := r.Group("/api")
 	auth.Use(middleware.AuthMiddleware())
diff --git a/internal/version/version.go b/internal/version/version.go
new file mode 100644
index 0000000..5e5dd61
--- /dev/null
+++ b/internal/version/version.go
@@ -0,0 +1,8 @@
+package version
+
+var (
+	Version    = "dev"
+	Commit     = "unknown"
+	CommitTime = "unknown"
+	BuildTime  = "unknown"
+)