The main symptoms of infantile wheezing bronchiolitis are predominantly wheezing, individually accompanied by cough and occasional fever, and parents of the child can hear a silky sound when wheezing. Infantile wheezing bronchiolitis is mainly caused by viral infections, including respiratory syncytial virus, adenovirus, rhinovirus, mycoplasma infections and bacterial infections, can also be caused. Then there are children who may have wheezing caused by allergic factors, and may have markedly prolonged expiration with wheezing sounds and wet rales heard on auscultation by the doctor. If the child has a history of eczema or a history of rhinitis, and the parents have a family history of allergies or a history of wheezing, the child can easily develop asthma. Therefore, children with wheezing bronchitis should be treated thoroughly and try not to have recurrent episodes. If there are many episodes, they may develop asthma.