Asthmatic bronchitis in children, also known as asthmatoid bronchitis, is a special type of paroxysmal bronchitis that occurs in infants and young children (under 3 years old). It refers to a group of allergic acute bronchial infections with wheezing. It refers to a group of lower respiratory tract infections in infants and young children with asthma. It is a clinical syndrome and generally refers to a group of acute bronchial infections in infants and young children with wheezing. The lung parenchyma is rarely affected, and some of the sick children may develop bronchial asthma. Because the trachea and bronchi of infants and young children are relatively narrow, they are easily aggravated by infection or other stimuli. In addition, the children have allergic constitution factors, and after the upper respiratory tract infection, they cause spasm or swelling of the small bronchi, resulting in wheezing. Therefore, some people believe that some children with this disease have infantile bronchial asthma (hereinafter referred to as asthma) or mild asthma.