Novel coronavirus infection forming novel pneumonia has been included in category B infectious diseases and is managed under category A. Because novel coronavirus is highly infectious, the population is universally susceptible to novel coronavirus infection and the population is not resistant to novel coronavirus. Because the novel coronavirus is highly contagious, the population is universally susceptible, any age group can be infected with the novel coronavirus, and the population is non-resistant to the novel coronavirus. Once a person is infected with a novel coronavirus, most patients will develop novel pneumonia. Patients may experience varying degrees of dry cough, fever, malaise, and even chest tightness and shortness of breath. In a small number of critically ill patients, multiple organ failure can occur, leading to clinical death. Novel pneumonia formed by novel coronavirus is a serious infectious disease that can be transmitted from person to person. At this time, it is important to strengthen protection against the characteristics of the disease, especially to control the source of infection. For suspected and confirmed patients, early isolation should be observed and treated. To cut off the transmission route, it is necessary to avoid going to the infected area, reduce unnecessary going out, wear masks, pay attention to indoor air ventilation and environmental hygiene, and pay attention to hand hygiene.