Asymptomatic patients with New Coronavirus infection can be divided into asymptomatic patients who are in the latent phase of infection and those who have been asymptomatic since the beginning of the infection, so the presentation of asymptomatic patients with New Coronavirus infection needs to be analyzed on a case-by-case basis. After the incubation period of 4-6 days and the onset of the disease, some patients may have symptoms related to Newcastle pneumonia, such as weakness of limbs, sore throat, runny nose, sneezing, etc., and in severe cases, they may have Respiratory distress, confusion, and even shock can occur. The other part of asymptomatic infected patients are recessive infected patients who do not show symptoms of NCCP from the time of infection to the time when the nucleic acid turns negative, so it is difficult to detect and draw attention to them. Since asymptomatic infected persons carry the New Coronavirus, even if they have no symptoms, they are still infectious, and transmission is more insidious in the population, making screening more difficult, so the risk of widespread transmission from asymptomatic infected persons still exists. Therefore, if you have been in close contact with a case of New Coronavirus, or have a history of travel or residence in an area with a high risk of New Coronavirus, you should be actively tested and undergo a 14-day active isolation. Daily attention should be paid to increasing awareness of self-protection, washing hands regularly, wearing masks, and reducing access to crowded places to reduce the risk of infection.