According to the current epidemic, the number of infections, size and number of deaths and other data references, this time the new coronavirus is a bit more serious than SARS and Middle East respiratory syndrome in 2003. Due to atypical clinical manifestations, such as fever, cough, malaise, dyspnea and other manifestations, and a long incubation period of 7-14 days, infection can also occur during the incubation period, the transmission route includes respiratory droplets, conjunctiva, contact can be, infecting a wide range of people, 9 months old infants to more than 80 years old elderly people can be infected.