The hazard level of novel coronavirus is defined as category B, while it is managed and prevented according to the measures for category A infectious diseases, etc. The novel coronavirus is highly contagious and has a high transmission capacity. When infected by this virus, novel coronavirus pneumonia can be formed, and human-to-human transmission can occur. Therefore, the patient must be controlled and isolated, and the source of infection must be controlled and the transmission route must be cut off. The spread of novel coronavirus is mainly by airborne droplet transmission and close contact transmission, which can easily lead to the spread of the epidemic or even outbreak if the source of infection is not controlled in time. Therefore, persons in close contact and those with epidemiological history need to be observed in isolation, and appropriate protective measures should be taken. Avoid going to the infected area and surrounding places, wear a mask, pay attention to environmental hygiene and ventilation, and pay attention to hand hygiene.