Nucleic acid testing is generally referred to as Neocoronavirus Nucleic Acid Test (NCT), which is a negative test that needs to be followed up with Neocoronavirus Nucleic Acid Test (NCT), and focuses on people who are at medium to high risk or who have been exposed to an infected person. Neo-coronavirus nucleic acid testing is done by taking a sample of the patient’s respiratory secretions to determine if the body is infected with neo-coronavirus. Neocoronavirus infection has an incubation period, and the nucleic acid test may be negative in the early stages of the disease, so continuous monitoring is needed to avoid missing cases of infection. Moreover, the nucleic acid test for Neocoronavirus is now standardized and regular monitoring of nucleic acid status is required to prevent the spread of the epidemic. If there is a recent history of traveling to a medium-high risk area or contact with patients with NCP or suspected infected patients who have had a negative NCR test result, they need to undergo another NCR test. Tip: “New coronavirus pneumonia” and “new coronavirus pneumonia” mentioned in this article were renamed to “new coronavirus infection” on December 26, 2022, as announced by the National Health Commission.