During the new coronavirus nucleic acid test, the nasal swab passing through the nasal cavity may cause a certain degree of pain, and different people have different levels of pain tolerance, which is reflected in different situations. Nowadays, the nucleic acid test refers to the new coronavirus nucleic acid test, which is a test method to collect secretions from the posterior wall of the pharynx with an ordinary throat swab, and then transport the specimen to the Laboratory Department, where it is tested for the presence or absence of the new coronavirus infection by specific instruments. One of the application of nucleic acid test nasal swab, through the nasal cavity to reach the posterior wall of the pharynx to scrape the secretion, in this process may damage the nasal mucosa and scraping process will cause discomfort, but this process does not take long, mostly 3 to 5 seconds can be, even if there is a little bit of pain to endure to complete the test, really can not stand can also be requested to apply the pharyngeal swab.