Respiratory syncytial virus is a RAN virus that can be transmitted through air and close contact, and is a common pathogen causing viral pneumonia in infants and children. Respiratory syncytial virus infection can be clinically manifested as fever, nasal congestion, respiratory distress when symptoms are severe, wheezing can be more serious, or even cause respiratory failure or heart failure, need to give active treatment, if not treated in a timely manner, the patient’s prognosis is poor. Viral infections should be isolated to avoid secondary infections of other pathogens, and attention should be paid to drinking more water to ensure a clear respiratory tract, and if there is sputum, to drain it in time, and to give sufficient calories and nutrients to strengthen the body. There is no exact antiviral drug for viral infection, some of them can be applied, but the main treatment is supportive.