The Neo-Crown virus antigen test is more accurate. The new crown antigen test is through the detection of the new crown antigen and antibody binding reaction on the test strip to determine, usually 15 to 20 minutes can produce results, very convenient and quick, mostly used for self-test. However, the window period of the new crown antigen test is narrower, for early infection or viral latency, due to the low viral load, it is easy to false negative results, its specificity is not strong, and can not reach 100%, sensitivity is not high enough, so it is not a substitute for nucleic acid testing. The purpose of the new coronavirus antigen test is to improve early detection of people at risk of infection. The accuracy is not as good as nucleic acid testing, but it is still quite accurate, so it can be used as an effective means of screening for infection. The new coronavirus antigen test should be performed according to the instructions to minimize errors. If the test result is positive, it should be reported promptly and confirmed by nucleic acid testing. If the diagnosis is confirmed, treatment should be actively pursued.