Two bars, one dark and one light, on the new coronavirus test paper are weakly positive, which is highly suggestive of the possibility of novel coronavirus infection and should be reported to the community and the organization in a timely manner for proper protection and isolation. Usually, the test results of novel coronavirus antibody test kits are marked by two lines, the first bar is the quality control zone, which is to determine whether the kit can work properly, and the second bar is the test zone, which indicates whether novel coronavirus infection is detected. If the first bar indicating the quality control zone is not displayed, the entire kit is invalid and the test needs to be retested with a new kit. If both bars are displayed, the second bar, regardless of color, should be reported to the community and unit for protection and isolation. A new crown test kit can be performed again, along with nucleic acid testing, to make a definitive diagnosis. However, it should be noted that the results of the New Crown kit cannot replace the results of nucleic acid testing, so nucleic acid testing and clinical examination should be performed by a healthcare professional to confirm the diagnosis.