The value of TSH suppression after thyroid cancer surgery needs to be set differently depending on the type of pathology, the patient’s age, gender, the degree of risk of tumor recurrence, and whether it is accompanied by co-morbidities. In the case of differentiated thyroid cancer, if the patient is at high risk of recurrence, it is usually controlled below 0.1, while patients at low risk of recurrence can be controlled below 0.5. In the case of medullary carcinoma, TSH only needs to be controlled within the normal range. Therefore, TSH suppression after thyroid cancer surgery depends on different conditions of patients, this is recommended to consult professional doctors, and TSH value can be changed according to different time limits, such as within one year after surgery and after 5-10 years after surgery.