The sudden outbreak of NCP has a profound impact on people's lives and the national economy. With the development of the epidemic in China, the impact on China's economy has become the focus of people's attention. To cope with the impact of the epidemic on the economy, the ministry of finance, the state administration of taxation, the general administration of customs and the national development and reform commission jointly issued a number of important documents. This paper analyzes the impact of pneumonia epidemic on China's economy from the two aspects of supply and demand, the relevant fiscal and tax policies issued by the affected countries, and the imperfect policies from the two aspects of epidemic and post-epidemic, and puts forward Suggestions, aiming at contributing to the national economic development