Under the influence of the COVID-19 epidemic in the past three years, all walks of life have been impacted and changed to varying degrees. Changes in public psychology, supply and demand structure and other factors have caused economic fluctuations. In the face of different challenges, risk assessment and development trends have been adjusted accordingly. On this basis, this study investigates the impact of COVID-19 on industry valuation models. To be specific, the comprehensive and empirical analysis were used for analysis based on the industry data of the three periods, before, during and after COVID-19. According to the analysis, this study found that optimizing and adjusting the firm valuation model. In addition, proposing changes to management in the face of a pandemic would result in varying degrees of improvement for each firm and even the industry as a whole. Overall, these results shed light on guiding further exploration of the valuation of the industry during the crisis, especially under the large-scale public health events.