The diagnostic criteria for suspected cases of New Coronary Pneumonia include epidemiological history and clinical manifestations. The epidemiological history mainly includes: 1. having been to the infected area or living or traveling in the infected area 14 days before the onset of the disease. 2. having a history of contact with a person infected with New Coronary Pneumonia 14 days before the onset of the disease. 3. having contact with a patient from the infected area or a patient with fever or respiratory symptoms from the infected area 14 days before the onset of the disease. 4. the characteristic of aggregated onset of the disease. Clinical manifestations include: 1. fever or respiratory symptoms. 2. with the above-mentioned CT imaging criteria for neocrown pneumonia. 3. blood tests are seen with reduced lymphocyte count, total white blood cell count and normal or reduced. A suspected case is diagnosed by 3 clinical manifestations or any 1 epidemiological history plus 2 clinical manifestations.