In the first half of 2020, the epidemic situation was serious, ranging from 20 19 to 12. The epidemic was first discovered in Wuhan, and in just over a month, it quickly spread from Wuhan to all parts of the country. By February 2020, coronavirus has occurred in almost all provinces and municipalities directly under the central government. Coronavirus is a large virus family, which is known to cause serious diseases such as colds, Middle East respiratory syndrome (MERS) and severe acute respiratory syndrome (SARS). Novel coronavirus is a new coronavirus strain, which has never been found in humans before. The common symptoms of people infected with coronavirus are respiratory symptoms, fever, cough, shortness of breath and dyspnea.