After thyroid cancer surgery, it is ideal to keep the TG value below 30%. Thyroid cancer is a common malignant tumor, and usually thyroid cancer needs to be treated by surgery. After surgery, the thyroid gland will be removed and the body will lack thyroid hormone. The dosage of Eugenol should be determined according to the thyroid function, and the dosage of Eugenol should be adjusted according to the thyroid test. In general, it is important to keep the TSH value less than 0.5mU/L so as to easily prevent the recurrence of cancer.