The new coronavirus antigen test usually produces a C result first, or both C and T may be present at the same time. Neocrown antigen testing is a test used to screen for novel coronaviruses and can be used in specific populations, such as quarantine watchers or community residents. However, the neo-crown antigen test is not a substitute for the neo-crown nucleic acid test, which is recommended for patients suspected of having a novel coronavirus infection. The neo-crown antigen test may produce results in the C region first, or may produce results in the T region first, or both, and it is not possible to generalize due to the different conditions of individual patients. If both the C and T regions look like purple or red bands, it is most often considered a positive result. If c shows a purple or red band and T does not show a band, the result is negative. For people under quarantine observation, regardless of whether the result of the new crown antigen test is positive or negative, the used items should be handed over to professional management personnel for procedural disposal.