What kind of cough water do you want to eat for dry cough? First of all, we should find out the cause of dry cough. Therefore, blood routine examination, C-reactive protein, erythrocyte sedimentation rate, tuberculosis antibody, tuberculin test, Tspot test, chest CT, pulmonary function, bronchial relaxation test, bronchial provocation test and nitric oxide determination are required. If it is confirmed to be cough variant asthma after examination, you can take montelukast sodium, levocetirizine, compound promethazine and guaiacol orally. In addition, it can also be treated by inhaling sibycodox. Drink more water, eat more fresh vegetables and fruits, and don't eat spicy and stimulating food.