Children have poor defenses and are prone to accompany respiratory infections. Coughing is a defensive reflex movement that prevents foreign body inhalation. There are many causes of dry cough in children, but there are only environmental factors, disease factors, and allergy factors. 1, environmental factors induced by dry cough, such as hazy weather, dry air, cold air stimulation, bad living environment stimulation. In this case, the first thing is to find out the cause, stay away from the bad environment, and remove the triggers of dry cough, for example, try not to go out in hazy weather and reduce outdoor activities. In a dry environment, we should increase the indoor temperature and humidity, eat lightly, drink more warm water, reduce snacks, and stay away from smoke and dust. 2. Dry cough caused by disease factors, including diseases of the nose, stomach, trachea and lungs, as seen in rhinitis, or chronic cough in infants and children with asthma, upper airway cough syndrome, mycoplasma infection, gastroesophageal reflux, etc., can cause dry cough. At this time, it is necessary to give oral solution of procaterol hydrochloride or oral solution of forcodine or oral solution of amiloride to stop the cough; anti-infection (often azithromycin dry suspension, erythromycin granules, cefixime granules, cefaclor granules, etc.), if necessary, together with anti-allergy (cetirizine, loratadine or montelukast sodium) treatment. When your child has a frequent dry cough, it is recommended to seek active medical attention to identify the cause and prevent the development of a chronic cough.