The most common type of thyroid cancer is papillary carcinoma. This type is less malignant. However, some patients may have lymph node metastasis. Although radical surgery is very effective, the following issues should be noted after surgery: First, thyroxine tablets need to be taken for life. Because, after thyroidectomy, the thyroid gland is not fully functional and needs to be supplemented. In addition, taking thyroxine tablets can inhibit the recurrence of thyroid cancer. Secondly, if there is metastasis in the lymph nodes of the neck, internal irradiation needs to be implemented to eliminate the metastatic lesions by radiation. It is common to take iodine 131. Thirdly, regular review of the neck, including the lymph nodes. If there is metastatic lesion, it can be detected early and treated early.