Empty cough requires cough suppressants for relief, such as codeine phosphate, Folcodine solution, and dextromethorphan. Empty cough is a cough without sputum, clinically called dry cough, and dry cough is the most common respiratory symptoms, the specific treatment is as follows: first of all, to give cough suppressing treatment, especially stubborn dry cough or persistent dry cough. Secondly, the exact cause of the dry cough needs to be further clarified. If the dry cough is caused by infection, anti-infection treatment is needed, such as the addition of amoxicillin, cefuroxime and other antibiotics. If the dry cough is caused by allergies, anti-allergy treatment, such as ketotifen, or nebulized budesonide or beclomethasone, should be given to relieve the cough.