Antigen test and nucleic acid test currently generally refers to the new crown antigen test and the new crown nucleic acid test, do the new crown antigen test or need to do the new crown nucleic acid test. The new crown antigen test is mainly to facilitate self-testing by people in isolation or at home who are inconvenient to come out to do nucleic acid. Although the sensitivity is not as high as the nucleic acid test, it is simple and fast, and the result can be obtained in 10 to 15 minutes, which is conducive to the early triage and rapid management of suspected people. Although a negative antigen test does not rule out the presence of infection, its positivity usually suggests that infection may be present. Both positive and negative antigen test results in suspects should be followed by further nucleic acid testing, and a positive result is not a definitive diagnosis of neocoronavirus infection. Nucleic acid testing is the definitive diagnosis of neocoronavirus infection, and antigen testing can be used to supplement nucleic acid testing.