Abstract: Due to flexible and diverse marketing activities, the mobile two-dimensional code payment has been gradually applied to metro ticketing systems of major cities in China. Based on the passenger flow and marketing activities data of Shanghai metro QR code payment in the past two years, the three-period development law of QR code passenger flow is revealed. Through calculating the correlation coefficient between the marketing activities and the QR code passenger flow in different stages of passenger flow development and different characteristic days, the influencing factors and changing laws are analyzed. On this basis, a multivariate regression model is established to quantitatively analyze the impact of different marketing activities on QR code passenger flow. Finally, corresponding improvement suggestions are proposed for increasing or maintaining the QR code′s passenger flow.