Nucleic acid testing currently refers to neocoronavirus nucleic acid testing, and it is not true that four types of people do not have to have a nucleic acid test. Nucleic acid test is mainly through the examination of oropharyngeal swabs, nasopharyngeal swabs and other specimens in the presence of viral nucleic acid, to determine the presence of new coronavirus infection. If a large-scale nucleic acid test is needed at the location, anyone should actively go to the testing site to cooperate with the sampling, and there is no such thing as “four kinds of people do not need to do nucleic acid test”. In addition, people who are in close contact with suspected or confirmed patients, or who have fever or respiratory symptoms, and who fulfill one of the following criteria, are required to take the nucleic acid test on their own initiative. At present, passengers at railway stations and airports are generally required to provide proof of nucleic acid test before they can take public transportation. Therefore, when it is time to take a nucleic acid test, you should actively cooperate with the test and do not believe in some “rumors”.