If thyroid cancer metastases to the lung, the following treatment measures can be taken: first, if it is an isolated single lung metastasis, surgery can be performed; if surgery is not possible, local radiotherapy or minimally invasive treatment can be performed; second, if it is multiple lung metastases, systemic treatment, such as iodine 131 therapy, systemic chemotherapy, molecular targeted therapy, immunotherapy, etc., should be performed. In addition to the above treatments, TSH suppression therapy should be administered. As seen above, the treatment of thyroid cancer involves surgery, radiotherapy, interventional medicine, nuclear medicine, endocrinology, medical oncology, etc. If lung metastasis is found, multidisciplinary consultation and discussion should be conducted to adopt a reasonable comprehensive treatment mode according to the patient’s specific condition.