diff --git a/deploy/scripts/deploy-blue-green-service.sh b/deploy/scripts/deploy-blue-green-service.sh
index e309175ae..24c60f2a3 100644
--- a/deploy/scripts/deploy-blue-green-service.sh
+++ b/deploy/scripts/deploy-blue-green-service.sh
@@ -96,7 +96,7 @@ else
 fi
 
 if [ "$target_slot" = "blue" ]; then
-  target_port="$BASE_PORT"
+  target_port=$((BASE_PORT + 20000))
 else
   target_port=$((BASE_PORT + 10000))
 fi
@@ -242,12 +242,11 @@ switch_gateway_proxy() {
       return 1
     fi
   done
+  route_root="${BLUE_GREEN_ROUTE_CONFIG_ROOT:-/www/server/panel/vhost/nginx}"
   if [ "$SERVICE" = "gateway" ]; then
-    config="$(env_value GATEWAY_BLUE_GREEN_NGINX_CONFIG)"
-    config="${config:-/www/server/panel/vhost/nginx/api-cn.buggoglobal.com.conf}"
+    config="$route_root/00-blue-green-gateway.conf"
   else
-    config="$(env_value GATEWAY_OVERSEAS_BLUE_GREEN_NGINX_CONFIG)"
-    config="${config:-/www/server/panel/vhost/nginx/api-global.buggoglobal.com.conf}"
+    config="$route_root/00-blue-green-gateway-overseas.conf"
   fi
   if [ -z "$config" ] || [ ! -f "$config" ]; then
     echo "$SERVICE 蓝绿切换要求环境文件配置有效的 Nginx 配置路径" >&2
@@ -285,12 +284,11 @@ reload_frontend_proxies() {
 rollback_gateway_proxy() {
   [ "$SERVICE" = "gateway" ] || [ "$SERVICE" = "gateway-overseas" ] || return 0
   [ "$DEPLOY_ENV" = production ] || return 0
+  route_root="${BLUE_GREEN_ROUTE_CONFIG_ROOT:-/www/server/panel/vhost/nginx}"
   if [ "$SERVICE" = "gateway" ]; then
-    config="$(env_value GATEWAY_BLUE_GREEN_NGINX_CONFIG)"
-    config="${config:-/www/server/panel/vhost/nginx/api-cn.buggoglobal.com.conf}"
+    config="$route_root/00-blue-green-gateway.conf"
   else
-    config="$(env_value GATEWAY_OVERSEAS_BLUE_GREEN_NGINX_CONFIG)"
-    config="${config:-/www/server/panel/vhost/nginx/api-global.buggoglobal.com.conf}"
+    config="$route_root/00-blue-green-gateway-overseas.conf"
   fi
   old_port="${active_port:-$BASE_PORT}"
   sed -i "s#127\.0\.0\.1:$target_port#127.0.0.1:$old_port#g" "$config"
diff --git a/scripts/blue-green-deployment-contract.test.mjs b/scripts/blue-green-deployment-contract.test.mjs
index 7b45d7975..cfc60686d 100644
--- a/scripts/blue-green-deployment-contract.test.mjs
+++ b/scripts/blue-green-deployment-contract.test.mjs
@@ -14,6 +14,7 @@ test('all backend business services have blue-green runtime contracts', async ()
   ]) assert.match(script, new RegExp(`${service.replaceAll('-', '\\-')}:`))
 
   assert.match(script, /target_slot="green"/)
+  assert.match(script, /target_port=\$\(\(BASE_PORT \+ 20000\)\)/)
   assert.match(script, /target_port=\$\(\(BASE_PORT \+ 10000\)\)/)
   assert.match(script, /compose run -d --no-deps --name "\$candidate"/)
   assert.match(script, /wait_for_container "\$candidate"/)
@@ -43,8 +44,9 @@ test('candidate failure keeps the active container and successful cutover stops
 
 test('gateway cutover is atomic and restores nginx config on validation failure', async () => {
   const script = await read('deploy/scripts/deploy-blue-green-service.sh')
-  assert.match(script, /api-cn\.buggoglobal\.com\.conf/)
-  assert.match(script, /api-global\.buggoglobal\.com\.conf/)
+  assert.match(script, /00-blue-green-gateway\.conf/)
+  assert.match(script, /00-blue-green-gateway-overseas\.conf/)
+  assert.doesNotMatch(script, /api-cn\.buggoglobal\.com\.conf|api-global\.buggoglobal\.com\.conf/)
   assert.match(script, /尚未完成首次蓝绿迁移，拒绝切换 Gateway/)
   assert.match(script, /frontend-\$frontend_service\.active/)
   assert.match(script, /尚未使用稳定上游 \$required_alias，拒绝切换 Gateway/)