Rapid heartbeat at night, to exclude organic diseases, the onset of the following causes: 1, arrhythmia: common arrhythmias are paroxysmal supraventricular tachycardia, you can monitor the heartbeat for 24 hours through dynamic electrocardiography; 2, hyperthyroidism: generally accompanied by irritability, increased diet, wasting and other symptoms, the need for thyroid function tests; 3, hypoglycemia: if the middle of the night Symptoms of hypoglycemia can occur, the heartbeat can be accelerated, especially if there is a diabetic base, hypoglycemic episodes can occur at night, pay attention to monitoring blood sugar; 4, various heart diseases: especially heart failure, heart failure may be aggravated at night and lead to a rapid heartbeat; 5, severe anemia, infection: all can lead to a rapid heartbeat; 6, autonomic dysfunction can also cause a rapid heartbeat, mainly mental tension, anxiety, Stress, staying up late, drinking coffee before going to bed, or emotional excitement, insomnia and other causes of sympathetic nerve activity, this situation through their own regulation to remove the triggers that cause a rapid heartbeat can be. Therefore, we need to find the cause and treat it.