Elderly people whose heart beats too fast may be caused by physiological factors or pathological factors, such as hyperthyroidism, arrhythmia, anemia, etc. Depending on the cause of the disease, rest, mood stabilization, medication or surgery will be used for treatment. 1. Physiological factors: some elderly people may experience rapid heartbeat during exercise, emotional excitement, anxiety, anger, or when they are frightened, and the increase in heartbeat can be relieved by resting and stabilizing their emotions. 2. Pathologic factors: (1) Hyperthyroidism: some old people may be accompanied by hyperthyroidism, in which the thyroid gland secretes too much thyroxine, causing an increase in sympathetic excitability and a faster heart rate. If this is the cause, oral medication such as propylthiouracil and methimazole should be taken as prescribed by the doctor, and if it is caused by nodules, surgical treatment may be needed. (2) Arrhythmia: Some of the elderly may have tachyarrhythmia, such as atrial fibrillation, atrial tachycardia, supraventricular tachycardia, etc. If this cause is considered, oral medication such as metoprolol, bisoprolol, etc., is required. Some of the elderly may need to undergo cardiac radiofrequency ablation if they have repeated episodes of arrhythmia. (3) anemia: some elderly people may be due to anemia, red blood cell reduction, blood oxygen carrying capacity is reduced, reflex caused by rapid heart rate, should be clear as soon as possible to cause the cause of anemia and treatment, if caused by iron deficiency need to comply with the doctor’s prescription oral iron, if caused by chronic kidney disease need to comply with the doctor’s prescription for the application of erythropoietin and so on. If the old man’s heart beats too fast the condition recurs, it is recommended to go to the hospital in a timely manner, after the cause of the disease is clear, targeted treatment.