Reasons for repeated coughing may include repeated exposure to allergens, untimely treatment, and so on. 1. Repeated exposure to allergens: allergic cough or allergic asthma caused by exposure to allergens, etc., generally improved by treatment, but if the allergens are exposed to again, the cough will reappear, and the allergens are not easy to find, so they will be exposed to again and again, repeated coughing. 2. untimely treatment: such as acute bronchitis, pneumonia and other patients, generally will be manifested as coughing, coughing up sputum, etc., if not given active treatment in the early stage of the disease, the airway mucosa persistent damage, sensitivity increases, may appear repeatedly cough, good not complete. Repeated coughing may have other causes, such as silicosis, tuberculosis, etc. You should go to the hospital in a timely manner, and the doctor will clarify the cause of the disease based on the symptoms, signs and auxiliary examinations, and then give the correct treatment for the cause of the disease.