Nucleic acid antigen self-test kit with two bars may mean that the patient is infected with the new coronavirus, which needs to be further diagnosed with other tests. At present, the nucleic acid self-test kit is mainly used to detect whether the body is infected with the new coronavirus, and the test result of two bars usually means that the patient is infected with the new coronavirus, which is a positive and abnormal phenomenon. False-positive results can be caused by improper operation or problems with the kits, and should be taken seriously. For those who have two bars in the kit, they should report to the community and cooperate with the community workers for further serologic examination and chest imaging. If the patient is diagnosed with novel coronavirus pneumonia, he/she needs to cooperate with the doctor for isolation treatment in order to improve the uncomfortable symptoms caused by the disease and promote the recovery of the body. When the nucleic acid self-test kit two bars, the crowd should avoid excessive tension and anxiety, and actively cooperate with relevant staff to take appropriate measures. Pay attention to daily rest, open the windows diligently to ventilate, should also be appropriate physical exercise, etc.. Specific cases need to consult a doctor and follow the doctor’s instructions. Tips] The “new coronary pneumonia, new coronary virus pneumonia” mentioned in this article has been renamed to “new coronary virus infection” on December 26, 2022, as announced by the National Health Commission.