A positive test for neocoronavirus antigen usually indicates that the surface protein of neocoronavirus has been detected in the body, suggesting that the body is likely to have been infected by neocoronavirus. Neocoronavirus is a new type of coronavirus that consists of a protein casing and internal nucleic acid. The new crown antigen test utilizes the principle that the surface protein of the new crown can react with its specific antibody. When the new crown antigen test is positive, it indicates that the surface protein of the new crown virus is present in the sample being tested, and it can be deduced that the new crown virus is present in the organism. When a positive result of the new crown antigen test occurs, it is likely to confirm that the organism has been infected, but it may also be a false-positive result. In this case, it is recommended that nucleic acid testing be conducted in a timely manner to confirm whether the organism has been infected, and that isolation and treatment measures be taken in a timely manner.