The full name of the new coronavirus outbreak is novel coronavirus pneumonia. Neocoronavirus outbreak is a new type of coronavirus pneumonia caused by a new type of coronavirus, which can be spread to susceptible populations through a variety of transmission routes. At present, the main source of infection of the new coronavirus is the new coronavirus infected people, in the incubation period is infectious, 5 days after the onset of the disease is more contagious, which can be transmitted through the respiratory droplets, close contact. In addition, the virus can be transmitted by aerosol in a relatively closed environment or by contact with objects contaminated with the virus. Currently, there are five main variants of the novel coronavirus, namely the Alpha, Beta, Gamma, Delta and Omicron strains, which are still prevalent both at home and abroad. In order to better interrupt the spread of the epidemic, we need to timely vaccination, take precautionary measures, pay attention to personal hygiene habits, strengthen personal physical exercise, so as to avoid infection to make adequate preparations. Tip: In this article, “new coronavirus pneumonia” and “new coronavirus pneumonia” have been renamed to “new coronavirus infection” on December 26, 2022, as announced by the National Health Commission.