In the case of chronic bronchitis in children, the following measures can be used: First, children should be given the formula of Kodi Chen Tang. Children with chronic bronchitis will have prolonged cough as well as sputum. Er Chen Tang is mainly composed of Semen, Chen Pi, Fu Ling and Licorice, which can dry dampness, resolve phlegm and stop cough, and can effectively reduce the symptoms of phlegm in children. Second, children can be given nebulizer treatment. Children with chronic bronchitis have airway hyperresponsiveness after the occurrence of chronic bronchitis, they can apply budesonide suspension nebulization to effectively reduce the respiratory hyperresponsiveness of children. Finally, children can be given amoxicillin or cephalosporins. Some children have chronic bronchitis that is recurrent and lingering because the bacterial infection is not completely cured.