diff --git a/docker/frontend/Dockerfile b/docker/frontend/Dockerfile
index 37d6c53a..50af19bf 100644
--- a/docker/frontend/Dockerfile
+++ b/docker/frontend/Dockerfile
@@ -27,7 +27,9 @@ COPY frontend/ ./
 
 # 设置环境变量（构建时使用）
 ARG NEXT_PUBLIC_API_URL
+ARG IMAGE_TAG=unknown
 ENV NEXT_PUBLIC_API_URL=${NEXT_PUBLIC_API_URL}
+ENV NEXT_PUBLIC_VERSION=${IMAGE_TAG}
 # Docker 内部网络使用服务名 server 作为后端地址
 ENV API_HOST=server
 
diff --git a/frontend/app/login/page.tsx b/frontend/app/login/page.tsx
index f94045ac..6beb90b5 100644
--- a/frontend/app/login/page.tsx
+++ b/frontend/app/login/page.tsx
@@ -126,6 +126,10 @@ export default function LoginPage() {
               </div>
             </CardContent>
           </Card>
+          {/* 版本号 */}
+          <p className="text-center text-xs text-muted-foreground mt-4">
+            {process.env.NEXT_PUBLIC_VERSION || 'dev'}
+          </p>
         </div>
       </div>
     </div>