Infants and young children can be infected with novel coronavirus, and infants and young children who have not been vaccinated against novel coronavirus pneumonia can also be susceptible and can be infected with novel coronavirus, which can cause manifestations of novel coronavirus pneumonia, including mild manifestations and multi-systemic manifestations, etc., which are as follows: 1. Mild manifestations: children’s general symptoms are relatively mild, and the symptoms of some children and neonatal cases can be atypical, only manifested as Mild manifestations: children’s general symptoms are relatively mild, and some children and neonatal cases may have atypical symptoms, such as vomiting, diarrhea and other gastrointestinal symptoms, or poor response and shortness of breath.2 Multi-systemic syndromic manifestations: a very small number of children may have multi-systemic inflammatory syndromes, similar to the manifestations of Kawasaki disease, atypical Kawasaki disease, toxic shock syndrome or macrophage activation syndrome, etc. Most children have the main manifestations during the recovery period. Most children occur in the recovery period mainly manifested as fever with rash, non-suppurative conjunctivitis, mucosal inflammation, coagulation dysfunction, hypotension or shock, acute gastrointestinal symptoms, etc., once the onset of the disease can be an acute deterioration in the short term. Therefore, infants and young children should also be prevented from the infection of the new coronavirus pneumonia, can go out less, reduce the number of people gathered in the place.