Waking up with a particularly fast heartbeat may be the emergence of cardiovascular blood supply insufficiency, arrhythmia. 1. Insufficient cardiovascular blood supply: in the middle of the night, because the body is in a state of rest, the whole body function activity is reduced, when the normal blood supply of the heart is insufficient, affecting the blood supply of the brain, the cerebral cortex appears to be excited, the patient wakes up in the middle of the night to appear obvious heartbeat acceleration, so as to stimulate the normal supply of blood to the heart and not to the cerebral ischemia. 2. Arrhythmia: Considering that it is caused by arrhythmia, it is recommended to finish 24-hour dynamic electrocardiogram, if there is no abnormality, don’t worry too much. Pay attention to the regularity of life, avoid tension, excitement, anxiety and other negative emotions, you can take drugs to improve sleep under medical advice. It is recommended that patients go to regular hospitals, can improve the cardiac ultrasound, 24-hour dynamic electrocardiogram, myocardial enzyme spectrum and other tests to clarify the cause of the disease, and actively consult the doctor, so as to avoid delaying the condition.