While the effects of COVID-19 have faded, little is known about its impact on shoppers are. This may be due to the scarcity of detailed data. Because of this, in this paper, this paper uses a systematic review to detail the changes in shopper behaviour in China as a result of the epidemic. To this end, I analysed the 2020 data literature on shopping to investigate How shoppers' Habits Changed During the COVID-19 Pandemic. It was finally shown that there was a substitution effect between online and offline shopping during the COVID-19 pandemic. As a result, we find that online shopping has gradually reduced people's willingness to shop offline since COVID-19. And with the introduction of government policies, such impacts are diminishing, but while the decision to shop remains almost unchanged. And a lot of this is down to the fear of infection and the effects of sealing control. The findings of this paper provide some reference for consumer recovery in the post-epidemic era, as well as for the response strategies of enterprises when they may face another epidemic in the future.