diff --git a/install.sh b/install.sh
index bdce28e..67abee7 100644
--- a/install.sh
+++ b/install.sh
@@ -2342,10 +2342,14 @@ repair_load_existing_config() {
 repair_regenerate_nginx_config() {
     print_step "重新生成Nginx配置..."
 
-    # 备份现有配置
+    # 清理旧的备份文件（避免nginx读取到错误配置）
+    rm -f /etc/nginx/sites-enabled/${PROJECT_NAME}.conf.backup.* 2>/dev/null || true
+    rm -f /etc/nginx/sites-available/${PROJECT_NAME}.conf.backup.* 2>/dev/null || true
+
+    # 备份当前配置到 /root/
     if [[ -f "/etc/nginx/sites-enabled/${PROJECT_NAME}.conf" ]]; then
-        cp "/etc/nginx/sites-enabled/${PROJECT_NAME}.conf" "/etc/nginx/sites-enabled/${PROJECT_NAME}.conf.backup.$(date +%Y%m%d%H%M%S)"
-        print_success "已备份现有配置"
+        cp "/etc/nginx/sites-enabled/${PROJECT_NAME}.conf" "/root/nginx-backup-${PROJECT_NAME}.conf.$(date +%Y%m%d%H%M%S)"
+        print_success "已备份现有配置到 /root/"
     fi
 
     # 调用现有的configure_nginx函数
@@ -2354,7 +2358,6 @@ repair_regenerate_nginx_config() {
     print_success "Nginx配置已重新生成"
     echo ""
 }
-
 repair_restart_services() {
     print_step "重启服务..."