Novel coronavirus pneumonia is usually contagious without the onset of illness, because people with asymptomatic infection with novel coronavirus pneumonia can also act as a source of infection. In addition, novel coronavirus pneumonia can become infectious during the incubation period and is more contagious within five days of the onset of illness. The current mode of transmission of the novel coronavirus is determined to be through respiratory droplet transmission and close contact, but can also be infected by contaminated objects, and aerosolized infections can be caused by prolonged exposure to high concentrations of the environment in confined places. The new coronavirus pneumonia does not attack, can be incubating patients or asymptomatic infected, the new coronavirus pneumonia symptoms in the early stages of fever, dry cough, fatigue.