Thyroid cancer metastasis to the lungs is a more serious condition because when thyroid cancer has developed distant metastases, it is usually in the advanced stage of thyroid cancer. Patients will have a series of clinical manifestations and need to take corresponding clinical interventions. When thyroid cancer has metastasized to the lungs, patients may present a series of more serious clinical manifestations, such as extreme emaciation, weakness, depression, decreased appetite, and persistent low-grade fever. Chest pain, chest tightness, cough, hemoptysis, wheezing, shortness of breath, etc. may occur in the lungs, while neck pain may occur in the thyroid gland. If it presses on the esophagus, it can also cause dysphagia, nausea, dry heaving and other symptoms. At this time, the patient has lost the opportunity for early surgical treatment, and some non-surgical treatments, such as radioactive iodine-131, can be adopted clinically to remove the metastatic lesions in the lungs. If necessary, targeted drug therapy can be chosen, such as the use of sorafenib, sunitinib and so on. To a certain extent, it can improve the quality of life of patients and slow down the development of the disease. However, even through this series of medical interventions, it can only try to prolong the patient’s life.