The Neo-Crown Antigen Test is a test used to screen for novel coronavirus infection, but is not a substitute for nucleic acid testing and can only be used as a preliminary diagnostic test. The reagent can be used for quarantine observation personnel, close-knit population, entry quarantine, and control personnel in the sealed area. This method is faster and can be used to quickly screen whether the examinee has the novel coronavirus. The new coronary antigen test can only play a preliminary role in determining new coronary virus infection, and cannot completely replace the new coronary nucleic acid test, which is a confirmatory indicator of new coronary virus infection. The results of the new coronary antigen test are considered positive if red or purple bands are present at C and T, and if the band at T is dark or light in color. If a red or purple band is present at C and no band is present at T, the test result is considered negative. If the reagents for the new crown antigen test are positive, the patient is advised to undergo another nucleic acid test to clarify the cause of the disease.