diff --git a/nginx.conf b/nginx.conf
index c9be409..78e9b9e 100644
--- a/nginx.conf
+++ b/nginx.conf
@@ -14,9 +14,9 @@
         try_files $uri $uri/ /index.html;
     }
 
-    # 后端 API 代理
+    # 后端 API 代理 - 修改为宿主机地址
     location /api/ {
-        proxy_pass http://backend:8080/api/;
+        proxy_pass http://host.docker.internal:8080/api/;
         proxy_http_version 1.1;
         proxy_set_header Upgrade $http_upgrade;
         proxy_set_header Connection 'upgrade';