The newborn is prone to capillary bronchitis, which is a disease that affects the small bronchi of the lungs, or capillary bronchi, hence the name “capillary bronchitis”; the etiology of capillary bronchitis is mainly respiratory syncytial virus; infection with the virus results in congestion of the small capillary bronchi, edema, increased mucus secretion, and inflammation that often involves the alveoli. The inflammation can often involve the alveoli, so it can be considered that 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), and oral depression. In severe cases, the child clearly shows nasal flapping and the “three concave signs” (i.e., the supraclavicular fossa, suprasternal fossa and epigastric depression during inspiration), and 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. Secondly, you can choose to take oral cough expectorant syrup; children with high fever should pay attention to reducing fever; children with combined bacterial infections need to be treated with antibiotics. Serious infections can still develop rapidly and progress to pneumonia and respiratory failure.