If there are no clinical symptoms, the patient should be isolated and observed according to the epidemic prevention policy; if there are symptoms, the doctor will provide antiviral treatment and nutritional support if necessary. If the test result is positive for nucleic acid, there is no imaging abnormality, and there are no clinical symptoms, usually no treatment is needed, and the patient should be isolated and observed according to the immunization policy, and his/her own immunity can make the nucleic acid negative. If there are symptoms such as cough, fever, weakness, or imaging abnormalities, the doctor will apply ritonavir tablets and ambavizumab for antiviral treatment and nutritional support according to the latest diagnosis and treatment plan for new coronavirus pneumonia. Tip: In this article, “new coronavirus pneumonia” and “new coronavirus pneumonia” were renamed to “new coronavirus infection” on December 26, 2022, as announced by the National Health Commission.