diff --git a/frontend/mining-admin-web/nginx/madmin.szaiai.com.conf b/frontend/mining-admin-web/nginx/madmin.szaiai.com.conf
index f00ebf13..265e2865 100644
--- a/frontend/mining-admin-web/nginx/madmin.szaiai.com.conf
+++ b/frontend/mining-admin-web/nginx/madmin.szaiai.com.conf
@@ -61,10 +61,11 @@ server {
     add_header Referrer-Policy "strict-origin-when-cross-origin" always;
 
     # ==========================================================================
-    # API 代理到 mining-admin-service (端口 3023)
+    # API 代理到 Next.js (端口 3100), 由 Next.js rewrite 分发到各后端服务
+    # 不直连 mining-admin-service, 因为 /api/trading 和 /api/mining 需要路由到不同服务
     # ==========================================================================
     location /api/ {
-        proxy_pass http://127.0.0.1:3023/;
+        proxy_pass http://127.0.0.1:3100;
         proxy_http_version 1.1;
         proxy_set_header Host $host;
         proxy_set_header X-Real-IP $remote_addr;