The heart is beating fast, go to the hospital in time to find out the reason, for different reasons to deal with, as follows: 1, if it is the occurrence of atrial fibrillation, paroxysmal supraventricular tachycardia and other tachyarrhythmias, need to be given anti-arrhythmic drugs in time to control the arrhythmia; 2, if it is because of heart failure, we should actively give anti-failure medication to control the heart failure, and actively treat the If it is caused by hyperthyroidism, drugs, surgery or iodine-131 treatment should be chosen according to the clinical condition to reduce the secretion of thyroid hormone and maintain the normal level of thyroid hormone in the body; 4. If anaemia is suffered, it is necessary to correct the anaemia actively, find out the cause of anaemia and give treatment to make the cause of anaemia be effectively controlled.