Antigen test generally refers to the new coronavirus antigen test, the result of two red bars for positive results, a high degree of suspicion to confirm the diagnosis, but can not be based on the diagnosis of the new coronavirus infection, you need to do further nucleic acid test to review the diagnosis. When using the new coronavirus antigen test kit for self-testing, when the “C” and “T” are colorful, regardless of the color of the band at the “T” or dark or light, are positive, suggesting that there may be New coronavirus infection may exist. However, at present, the diagnosis of new coronavirus infection in China is based on the nucleic acid test. If there are two red bars on the antigen test, a nucleic acid review is needed. If there are two red bars in the antigen test result of the new coronavirus, the relevant epidemic prevention department should be notified immediately, isolation and protection should be done, and the nucleic acid test should be conducted under the instruction in order to clarify whether the new coronavirus infection has occurred.