Yes, you can. McDonald's coupon code can be used on self-service machines. McDonald's restaurant has a self-service ordering machine. Go through the normal ordering process first, and then the prompt to use 30 will appear. You can place an order with 30 in your mobile phone, and then choose Alipay or WeChat to pay. In this way, food rolls can be bought at a small price. If you can't operate it, you can go to the front desk and face it directly.