If the antigen is positive three times, then it is basically considered to be infected, and it is recommended that you should go to the hospital as soon as possible. If the antigen is positive three times, then the possibility of infection is very high, and it is best to go to the hospital to improve the nucleic acid test for further clarification. During the current epidemic of the new crown virus, the home to do the new crown antigen test is now commonly used means of detection, if three times are positive, then basically can be clear new crown infection. In this case, it is recommended that the patient first needs to call the community. With the help of the community or a doctor, the patient should be isolated and treated as soon as possible to avoid infecting others.