Currently, novel coronavirus infection has been treated as a national category B infectious disease, but it is implemented according to category A infectious diseases. For the prevention of infectious diseases, as long as the source of infection, the transmission route and the host of the three hurdles, can be effectively prevented. The source of infection is the wild animals and patients that have the ability to transmit the virus, and should be effectively isolated so that patients and normal people are separated and cannot come into contact with each other. It has been recommended to disinfect objects and air with chlorinated disinfectant and alcohol; to protect the host, i.e., the susceptible population. These people should be isolated at home and given immune-enhancing drugs if available. In addition, attention should be paid to diet, nutrition, work and rest, and emotional adjustment so that the immunity of these people is in an optimal state, which will help prevent the new coronavirus infection. Content source: Dr. You Lai