New crown antigen self-test two bars, that is, in the “C” and “T” two short lines will appear, generally suggests that the test results for positive, need to pay attention to, timely improve the new crown virus nucleic acid test. In the new crown antigen self-test, you need to pay attention to the “C” and “T” two positions of the line, if the “C” and “T” two positions of the line at the same time, the “C” and “T” two positions of the line. If both “C” and “T” lines appear at the same time, it is “self-testing two bars”; in this case, the line at the “C” position is usually red or purplish-red, and the line at the “T” position is red or purplish-red, and the line at the “T” position is red or purplish-red, regardless of the color. In this case, the line at “C” is usually red or purplish red, and the line at “T” is positive regardless of its color. If the antigen test result shows two bars, it is necessary to contact the local community immediately to report the situation and go to the fever clinic or designated hospital window for further nucleic acid testing, which can be used to confirm the final diagnosis.