It is not always fever and dizziness when infected with the new coronavirus pneumonia. This time, the new coronavirus pneumonia has been found in asymptomatic infected persons, i.e. without any physical discomfort, but with positive results when performing virological tests and with certain transmission. The general symptoms of new coronavirus infection include fever, malaise, dry cough, and gradually respiratory distress; in mild cases there may be no significant fever, and in severe cases there may be acute respiratory distress syndrome, septic shock, metabolic acidosis that is difficult to correct, and outgoing coagulation dysfunction. Therefore, people who have been to the source of the epidemic or have a history of contact with confirmed patients during the epidemic must be isolated at home and admitted to hospital for treatment in case of symptoms.