The continuous development of China's economy has greatly changed people's lifestyles. And people have entered a new era in monetary transactions. From the original exchange of goods,to later currency transactions, to today's electronic payment, all not only demonstrates the progress of the times.Different from traditional payment methods, electronic payment adopts advanced technology to complete information transmission through digital circulation, and then completes payment by digital means. To put it simply, cashless transaction means that people only need to scan the QR code, input the password, or fingerprint, face brush and other ways to pay, thus making our life more convenient and fast.