Some children do not have obvious clinical symptoms after infection with C. neoformans, but some may have fever, dry cough, malaise and some accompanying symptoms. The new coronavirus is caused by the new coronavirus, some children infected with the new coronavirus, there is no obvious clinical symptoms, called asymptomatic infected. Although asymptomatic, they are still contagious and should be taken seriously. Most of the children infected with the new coronavirus pneumonia will appear a series of clinical symptoms, mainly manifested as fever, fatigue, dry cough, but also some children will appear nasal congestion, runny nose, sore throat, loss of smell and taste, conjunctivitis, muscle pain or diarrhea and other manifestations. Mild patients do not show signs of pneumonia, but patients with severe disease will develop dyspnea and hypoxemia a week after the onset of the disease, and in severe cases, acute respiratory distress syndrome will occur, and some may even develop acidosis, coagulation dysfunction or multi-organ failure and other serious conditions. New Crown pneumonia is highly contagious, once the symptoms suggest timely access to hospitals, the consultation process should pay attention to isolation, to avoid the spread of the epidemic.