Severe cough of lung cancer can be relieved by taking cough suppressants, such as codeine hydrochloride and dextromethorphan, which can generally help to relieve cough. If lung cancer patient has serious cough, he/she can take cough suppressants such as codeine hydrochloride, dextromethorphan and other cough suppressants according to doctor’s prescription, which can generally help to achieve the effect of sedation and cough suppression. Codeine hydrochloride also has analgesic effect, but it is addictive and should not be taken for a long time. Coughing of lung cancer patients may be related to irritating cough caused by tumor or bronchial spasm caused by tumor compression of respiratory tract. Usually the cough is stubborn or with blood in the sputum, so it should be treated under doctor’s guidance, targeting at the cause of the disease, such as surgical treatment or radiotherapy, chemotherapy and other treatments, which can help to stop the cough from the source.