diff --git a/deploy/nginx/frontend.conf b/deploy/nginx/frontend.conf
index 045355f..fcc26d1 100644
--- a/deploy/nginx/frontend.conf
+++ b/deploy/nginx/frontend.conf
@@ -11,14 +11,19 @@ server {
     }
     
     # API 代理到后端
+    # 使用宿主机网关地址（Docker 默认网桥）
+    # 如果 172.18.0.1 不可用，可能需要调整为实际的 Docker 网桥地址
+    set $backend_host 172.18.0.1;
+    
     location /api/ {
-        proxy_pass http://172.17.0.1:8001/api/;
+        proxy_pass http://$backend_host:8001/api/;
         proxy_http_version 1.1;
         proxy_set_header Host $host;
         proxy_set_header X-Real-IP $remote_addr;
         proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
         proxy_set_header X-Forwarded-Proto $scheme;
         proxy_read_timeout 120s;
+        proxy_connect_timeout 10s;
     }
     
     # 静态资源缓存