Mild cases of novel coronavirus pneumonia with strong resistance usually take about 8 to 14 days to recover on their own, but if the patient’s condition develops severely, they cannot recover on their own and need treatment. After infection with the new coronavirus, some patients will have relatively mild clinical symptoms and are defined as patients with mild cases of new coronavirus pneumonia. Such patients often have no systemic symptoms and no obvious pathologic changes in the lungs after infection with the virus. This is mainly due to the low replication number of the virus and its low pathogenicity. If the patient has a strong resistance, the disease usually resolves spontaneously in 8 to 14 days. If the patient’s resistance is poor, or the disease develops rapidly, leading to pathological changes in the lungs, fever, cough and other respiratory symptoms should be treated in time, and should not blindly wait for spontaneous healing, so as not to cause adverse consequences. [Tip] This article refers to the “new coronary pneumonia, new coronary virus pneumonia”, etc., has been December 26, 2022, the National Health Commission issued a notice to change the name to “new coronary virus infection”.