Children with frequent and violent dry cough may be related to allergy, airway foreign body, etc., need to detach from the allergen, oral loratadine, fiberoptic bronchoscopy to remove the foreign body. 1. Allergy: Children with allergies often come into contact with dust mites, irritating gases, etc., resulting in airway hyperreactivity, which can lead to frequent and severe dry coughs. After detaching from the allergen and leaving the allergic environment, the cough may improve. If the symptoms are severe, oral treatment with drugs such as loratadine may be appropriate. 2. Airway foreign bodies: Children are young and may put small toy parts, peanuts, etc. into their mouths and inhale them into the airway by mistake, resulting in frequent irritating coughs. It is necessary to go to the hospital immediately, under the fiberoptic bronchoscope, to remove the foreign body, to avoid blocking the lungs, resulting in pulmonary atelectasis. All of the above medications should be used under doctor’s supervision, avoid self-medication. There may be other reasons for children’s frequent and severe dry cough, so it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or therapy.