According to the latest Health Care Commission issued the sixth edition of the diagnosis and treatment protocol for new coronavirus pneumonia, the diagnosis of new coronavirus pneumonia is marked with the following points: 1. The diagnosis of a suspected patient must first have an epidemiological history, such as having been to the infected area, having contact with people from the infected area, and having contact with a clearly diagnosed patient. If there is an aggregated illness, for example, one of the people who ate together later became ill, it is also considered a suspected epidemiological history; 2. There must also be relevant clinical symptoms of the respiratory tract, such as coughing and difficulty in breathing; 3. On imaging, CT reveals that there are already lamellar or ground glass shadows in the lungs; 4. In the clinical time, the blood picture can be checked and there is a continuous decrease of lymphocytes. To diagnose a suspected patient, one of the epidemiological history and two of the clinical symptoms, such as symptoms, CT response, or the presence of blood changes, are required. If there is no epidemiological history, three of the clinical symptoms are required, i.e., the presence of both fever, respiratory symptoms, CT manifestations, and blood changes, to confirm the diagnosis of a suspected case. Content source: Dr. Yurei