Antigen test generally refers to the new coronavirus antigen test. Antigen test for cold and fever is accurate and has some reference value, but it is still necessary to confirm the diagnosis by nucleic acid test. Antigen test is applicable to specific groups of people, especially in the acute infection period to do antigen test is more accurate, nucleic acid antigen test can be used as a complementary method of nucleic acid test, it is simple to operate, you can operate at home. If there are symptoms of cold and fever, you can buy your own antigen test paper to test at home first, if the result is positive, you need to carry out rapid triage and isolation, and then go to the hospital to carry out nucleic acid testing to confirm the diagnosis. If the antigen test is negative, it is considered to be a common cold, and the patient can be treated accordingly according to the symptoms, but try to avoid contact with other people during the cold and fever.