Yang Xiaoyong and Wu Yuxuan wrote in the first issue of the 2021 issue of Shanghai University of Finance and Economics that the global economic recession triggered by Covid-19 will lead to great changes in the world economic pattern during the post epidemic period. Novel coronavirus pneumonia is China's novel coronavirus pneumonia, which is directly related to the economic recession. However, there is no necessary link. Under the impact of the same new Covid-9 situation, China can quickly control the epidemic situation with the superiority of the socialist system and become the only major economic recovery currently. Marx's theory of economic crisis can give a scientific explanation. In the post epidemic period, with the further development of China's socialist system, the recovery of the world economy will depend on China's economy, which will bring new development opportunities for China's international financing, industrial upgrading, consumption recovery and digital economy. China should formulate targeted policies to turn danger into opportunity and realize the important strategic goal of "six stabilities and six guarantees".