Hyperthyroidism is short for hyperthyroidism. Hyperthyroidism causes a fast heartbeat that can usually be lowered by taking medication. Hyperthyroidism patients with high levels of thyroid hormones can lead to high metabolic state, resulting in increased contractility of the heart muscle, increased heart rate, etc., can follow the doctor’s instructions through the use of antithyroid drugs, such as methimazole, propylthiouracil and other treatments, serum thyroid hormone control in a reasonable range, the rapid heartbeat can be relieved. In addition, beta-blockers, such as propranolol and metoprolol, can be used to slow down the heart rate of hyperthyroid patients. Therefore, the fast heartbeat caused by hyperthyroidism can be lowered by taking medication. Patients with hyperthyroidism who have a fast heartbeat can go to the hospital and be treated with medication under the guidance of a doctor.