Itchy throat of lung cancer may be caused by metastasis, edema and inflammation of throat, and radiotherapy, anti-inflammation and nutritional support therapy should be taken according to the cause. 1. Cancer metastasis, when lung cancer metastasizes to mediastinum in late stage and stimulates the recurrent laryngeal nerve, patients will have itchy throat, cough or even hoarseness, so it is necessary to carry out local radiotherapy for metastatic lesions to shrink the tumor in order to improve the symptom; at the same time, systemic anticancer treatment should be indispensable. 2. Edema and inflammation of throat, lung cancer patients with low immunity are prone to respiratory tract infection, which leads to edema and inflammation of throat, thus causing itching and pain in throat, so they need to use drugs such as amoxicillin for anti-inflammatory treatment, and nutritional supportive treatment when necessary.