Medication problems: Patients with total thyroidectomy should start taking Eugenol within 1 week after surgery (according to the dose calculated by the doctor, to be taken in the morning on an empty stomach) and have their thyroid function checked after 6 weeks (not less than 6 weeks, it is not accurate unless there are symptoms of hyperthyroidism such as panic, excessive sweating and hyperphagia). Most patients with hemisection do not take Eugenol at first, and thyroid function tests will be repeated after 6 weeks to see if Eugenol is needed based on the results. 7 working days after surgery, you can go to the medical records office on the 2nd basement floor of the hospital building 1 to make copies of your medical records, get the final paraffin pathology and ask your surgeon for a review, and ask questions about whether you need iodine 131 and the extent of TSH control. The question of review. Start to review every 6 months. The review items are full thyroid function, neck ultrasound, thyroglobulin (for patients with total excision).