The cough medication for lung cancer patients should be analyzed and selected according to specific circumstances. If the cough is caused by secondary infection, especially coughing sputum, cough suppressant and expectorant drugs can be used to relieve it, such as Ambroxol hydrochloride tablets and acetylcysteine tablets for expectorant treatment. If it is a dry cough, you can choose central cough suppressants, such as dextromethorphan guaiacyl ether syrup or compound codeine phosphate tablets. If the cough is caused by the lung cancer tissue itself, such as cough symptoms caused by compression of bronchi or blockage of bronchi, only central cough suppressants, including cotrimoxazole phosphate tablets and cotrimoxazole oral solution, should be used. At the same time, anti-tumor treatment or bronchoscopic treatment should be given actively to relieve the compression and obstruction of the tumor in order to truly relieve the cough.