1.Post-operative review, within two years, every three months; two to five years, every six months; after five years, every year. 2, review content, mainly do thyroid, neck ultrasound and thyroid function (fasting blood check, half an hour after eating breakfast). In addition, every full year after surgery, you need to do chest flat film or chest CT flat scan to understand the lung situation. 3, postoperative should be low iodine diet. Do not eat nori, shrimp skin, seaweed, chicken essence, seafood, abalone, sea cucumber, cruciferous plants: cabbage, white radish, etc. The rest of the diet is basically the same as that of a normal person. Try to eat non-iodized salt; if there are minor children at home, you can use iodized salt. When cooking, put iodized salt in immediately after heating the oil, most of the iodine will sublimate. 4. After surgery, you should take Eugenol (50 micrograms) for life, generally one and a half tablets for unilateral lobectomy; two to two and a half tablets for total thyroidectomy. The purpose of taking the drug is to make up for the lack of thyroid hormone secretion on the one hand, and to inhibit the recurrence and metastasis of tumors on the other. Its main side effect has a certain toxicity to the heart; on the other hand, it has the effect of decalcification, and it is recommended to take appropriate calcium supplement after surgery, and it is generally recommended for patients to take, Calcium-D, which can be taken 1 capsule every 2 days.