The hospital's QR code can be paid by credit card, because the hospital has three payment methods: cash payment, code scanning payment and credit card payment. Cash payment is settled directly in cash, code scanning gun is used to scan mobile phone payment, and after credit card payment, as long as repayment is made on time within the time limit. Credit card payment methods mainly include unsecured credit card payment, payment through a third-party broker and simple credit card encryption payment.