Prolonged cough in children can be seen in respiratory tract infections, cough variant asthma, tracheal foreign body, etc. Intervention needs to be carried out according to the cause, such as tracheal foreign body needs to be removed by bronchoscopy. 1. Respiratory tract infections: such as acute bronchitis, clinical symptoms such as cough, fever, etc., when parents do not comply with the doctor’s advice for a full course of treatment, there may be a prolonged cough phenomenon, need to comply with the doctor’s advice for regular treatment. 2. Cough variant asthma: these children may have a history of allergy, clinical cough phenomenon, often presenting a dry cough, mostly at night, in the morning, or after activity, perfect pulmonary function tests can be seen in the airway reactivity increased, treatment can be used budesonide nebulizer treatment, while oral leukotriene receptor antagonist (such as montelukast sodium) treatment, need to follow up with doctor’s orders. 3. Tracheal foreign body: these children may also have prolonged cough, may have a history of foreign body choking, improve the diagnosis of imaging can help, the treatment needs to be bronchoscopic foreign body removal. Children with prolonged cough may also be associated with other causes, it is recommended to consult a doctor in order to identify the cause of the disease and standardize the treatment. All of the above drugs should be used under the supervision of a physician.