Usually a cold will not affect the results of the Neocoronavirus antigen self-test. However, if you have cold symptoms after infection with Neocoronavirus, the test result will be positive. The results of the new coronavirus antigen self-test should be interpreted within the specified time. A red band at C and no band at T in the visual window is a negative result; a red band at both C and T, and a darker or lighter band at T, is a positive result; and no red band at C and no band at T is an invalid result, and should be re-tested. Whether the test is positive or not depends on the number of viruses, as long as there are no viruses in the body of a person with a cold, it does not affect the results of the self-test of the new crown antigen, but if a person is infected with the new crown virus and develops symptoms of a cold, the test result will be positive. Compared to nucleic acid testing, antigen testing is faster and easier to perform, but is less accurate and is generally used in the early stages of infection. It is only used as a supplement to nucleic acid testing, which is still the gold standard in China. If you are infected with the new coronavirus and have cold symptoms, it is recommended that you go to the hospital for examination in time to avoid the spread of the epidemic.