If a four-year-old baby coughs more than one, you can first carry out the treatment of nebulized inhalation, nebulized inhalation of drugs including inhalation budesonide suspension, terbutaline sulfate nebulized liquid, and at the same time oral administration of some cough suppressing traditional Chinese medicines, such as pediatric elimination of accumulation and relieving cough oral solution, pediatric lung heat cough and wheezing oral solution, and so on. In addition, the most important thing is to clarify the cause of the cough, whether it is infection caused by bronchitis, bronchopneumonia, or allergy caused by allergic cough, cough variant asthma, etc., and may also be a foreign body inhalation and other causes of cough. Therefore, it is recommended to go to the hospital for relevant examinations, such as routine blood tests, C-reactive protein, mycoplasma antibodies, lung CT, chest X-ray, etc., according to the results of the examination, to clarify the cause of cough, and treatment for the cause.