For follicular thyroid cancer and papillary carcinoma, the best treatment method currently recognized at home and abroad is: total or near-total thyroidectomy + radioactive iodine 131 therapy + thyroid hormone suppression therapy. Different treatment options have different therapeutic effects, and comprehensive treatment is the best choice. The risk of recurrence for total or near-total thyroidectomy, total or near-total thyroidectomy + thyroid hormone suppression therapy, and total or near-total thyroidectomy + radioactive iodine 131 therapy + thyroid hormone suppression therapy is 34%, 11%, and 2.7%, respectively. Surgery: Complete surgical resection is the most basic treatment for follicular and papillary thyroid carcinoma. Except for tumors less than 1 cm in diameter and confined to the thyroid gland, total or near-total thyroidectomy should be performed, and subtotal thyroidectomy and single lobectomy are not recommended. Radioactive iodine 131 therapy: Postoperative residual thyroid tissue (including residual cancer tissue), recurrent or metastatic foci of follicular thyroid cancer and papillary cancer can take in 131 iodine, and the beta radiation emitted by iodine 131 can kill cancer cells and achieve the purpose of treatment. Thyroid hormone therapy: Thyroid hormone therapy can inhibit the body from producing serum thyrotropin, which can promote the growth of thyroid cancer cells. Therefore, thyroid hormone therapy can remove the environment that promotes the growth of thyroid cancer cells and achieve the purpose of treatment.