Cough variant asthma in three-year-old children should be timely consultation and treatment, follow the doctor’s instructions for targeted treatment, you can improve the disease through the identification of allergens, daily regimen, medication and so on. 1. Identify allergens: Cough variant asthma is generally associated with genetic factors, and most attacks occur after exposure to allergens, such as cold air, dust, pollen and other causes of airway hyperreactivity. Allergens should be identified as soon as possible and contact with allergens should be avoided. 2. Daily management: regular diet, eat less spicy and stimulating food; strengthen the nutritional supplement, appropriate physical exercise to improve the child’s resistance and immunity, reduce the incidence of asthma. 3. Medication: When asthma has an acute attack, coughing, wheezing, dyspnea and other manifestations can be used bronchodilators, such as albuterol, or combined glucocorticoid drugs, such as dexamethasone nebulized inhalation. Through reasonable and standardized drug treatment, the general condition can be effectively controlled. In conclusion, three-year-old children with cough variant asthma should go to the hospital in a timely manner, under the guidance of the doctor for treatment. All of the above drugs need to be used under the guidance of a doctor.