When mediastinal lymph node metastasis occurs in lung cancer, the symptom of hoarse throat will appear, which is often more difficult to treat. First of all, treatment should be directed to the cause of the disease, and targeted treatment measures should be taken according to the type of lung cancer. Common measures include chemotherapy and radiotherapy, etc. When the systemic lesions are improved, the mediastinal lymph nodes will also shrink or even disappear, thus reducing the performance of hoarseness. If the above treatment is not effective, minimally invasive treatment, such as iodine 125 particle implantation, can be carried out with more obvious treatment effects. In addition, Chinese medicine identification treatment is also effective in treating hoarseness.