Infants are generally defined as babies younger than 1-2 years old; this age group is prone to capillary bronchitis, a disease that affects mainly the small bronchi of the lungs, or capillary bronchi, hence the name “capillary bronchitis”; the pathogen of capillary bronchitis is mainly respiratory syncytial virus; infection with the virus results in small capillary bronchi The virus infection of the small capillary bronchus, edema, increased mucus secretion, inflammation can often involve the alveoli, so it can be considered capillary bronchitis is a special type of pneumonia. The typical capillary bronchitis often occurs 2 to 3 days after the upper respiratory tract infection, with persistent dry cough and fever, characterized by episodes of wheezing, with significantly faster breathing during wheezing episodes, up to 60 to 80 times per minute or more, with severe children clearly showing nasal flapping and the “triple concave sign” (i.e., supraclavicular fossa, suprasternal fossa and epigastric depression during inspiration). The child is often irritable and crying. The treatment of antispasmodic and asthma is the first priority, as soon as possible to relieve the infant wheezing caused by hypoxia is the first priority, nebulized inhalation treatment should be preferred, can be combined with inhalation of hormones and bronchodilators, according to the severity of wheezing to choose the number of inhalation per day, wheezing severe can be inhaled 4-6 times a day, as wheezing symptoms reduce, gradually reduce the number of times to 2 times a day, generally need about 1 week. Next, you can choose to take oral cough syrup; children with high fever should pay attention to reducing fever; children with combined bacterial infections need to be treated with antibiotics.