The time of review for hypothyroidism should depend on the specific condition. It is recommended to review once every half month during the initial medication phase, once every month after the index is stabilized, and once every 2-3 months after it has lasted for half a year. For hypothyroid patients, thyroid hormone replacement therapy is usually started at a small dose, so it may be necessary to monitor the thyroid function level once every half month during the first month in order to adjust the drug dosage in a timely manner. After the thyroid hormone level is normal, thyroid function should be monitored once a month, and then rechecked once every 2-3 months after the indicators are stabilized. Patients with long-term hypothyroidism can be reviewed once every 3 months to 6 months. In addition, the amount of thyroid hormone replacement therapy may need to be increased during illnesses such as colds, and the number of re-examinations should be increased accordingly. Patients can go to the endocrinology department of the hospital for timely review and adjustment of medication dosage according to their condition. Patients with hypothyroidism should pay attention to keeping warm, adhere to appropriate sports, prevent colds, and prevent trauma and infection.