If thyroid cancer has metastases in the lungs, considering whether it can be cured or not needs to depend on how many metastases there are. If there are multiple metastases on the lungs, then we can only look at the pathology of the primary thyroid cancer, such as microscopic lesions and medullary carcinoma. If the pathology is more malignant, it is not curable; if it is less malignant, there is no problem without treatment. If there are few metastases on the lung, only 1-2, it is likely to be cured at this time. Local ablation can be used to ablate the metastases on the lung, which can achieve the effect of physical cure. Whether thyroid cancer lung metastases can be cured depends on the pathological type of thyroid cancer and the number of metastases. In case of microinfiltrative type, usually even if there are lung metastases, the patient’s survival and quality of life are very good and will not be particularly severe or will not progress and deteriorate in a short period of time. Medullary thyroid carcinoma is the most common type that will lead to a lower survival after metastasis, because the degree of malignancy is higher, and after metastasis on the lung will cause a sharp decline in lung function, which will also lead to more and more metastatic lesions on the lung, and the prognosis is worse at this time.