If a 20-year-old patient always has panic attacks and rapid heartbeat, the first thing to do is to rule out hypokalemia and hyperthyroidism. It is recommended that the patient have thyroid function tests, routine blood tests, and serum ion tests, because some patients may also have anemia. If there is no abnormality in any of the above, then further consideration should be given to whether it is due to cardiomyopathy or congenital heart disease, and patients are advised to have an ambulatory electrocardiogram and cardiac ultrasound. If all these organic lesions are excluded, we should consider whether the patient is caused by psychological factors, for example, some patients may have anxiety and plant nerve dysfunction, and they may feel panic and rapid heartbeat from time to time.