Young children coughing old bad reasons are mainly physiological factors, allergies and bronchitis, etc., according to the cause of the treatment, generally for the strengthening of care and medication and other treatments. 1. Physiological factors: cold air is easy to stimulate the respiratory tract causing airway spasm. Parents should do a good job of protecting their children, wear a good mask when going out, drink plenty of warm water and strengthen nursing care, which can ease the symptoms of recurrent coughing. 2. Allergy: some children exposed to allergens such as pollen, dust, etc. easily caused by cough, this cough is generally irritating dry cough, it is recommended to avoid contact with allergens, oral cetirizine hydrochloride drops anti-allergy. 3. Bronchitis: If the child’s cough is caused by bronchitis, the treatment can be based on pathogens such as viruses, mycoplasma and bacteria. Viral infections can be treated with oseltamivir phosphate; mycoplasma infections can be treated with azithromycin; and bacterial infections can be treated with cefaclor. It is recommended to go to a professional hospital for treatment to avoid delaying the condition. The above medications should be used under the guidance of a doctor.