Asymptomatic patients are those who have no common clinical symptoms and whose disease or severity cannot be determined by symptoms. It is possible that the incubation period after infection is in a state of no specific symptoms and that the corresponding symptoms appear after the incubation period ends. Therefore, there are no top 8 symptoms of asymptomatic infected patients. Asymptomatic is due to the fact that after infection with the virus, the autoimmune system does not detect stress factors and thus does not trigger an inflammatory response and therefore does not show symptoms. Asymptomatic infected persons exist due to many diseases, commonly asymptomatic infected persons with New Coronavirus, asymptomatic infected persons with AIDS, hepatitis B virus carriers, etc. Asymptomatic infected patients have good concealment because they do not have obvious clinical symptoms, but these patients carry the virus in their bodies and can only be detected by testing. Since some asymptomatic infected persons cannot be detected in time, they still spread the virus and cause other people to be infected, thus posing great difficulties to the prevention and control of infectious diseases. Therefore, it is important to be more aware of precautions in daily life. If you have been in close contact with someone infected with the virus, or have visited a place where there are more infected people, but are not sure if you are infected, it is recommended that you go to a hospital for testing in time, for your own health and to protect the health of others.