There are several reasons for a faster heartbeat: 1, the role of alcohol, alcohol has a first excitement and then inhibition, so the beginning of drinking because of the excitement of the center to speed up the heartbeat, drinking a large amount of alcohol later will appear to inhibit the respiratory center, because of lack of oxygen and make the heartbeat faster. 2, increased hemolysis, drinking alcohol increases the amount of fluid into the body, the whole body blood volume increases, so that the return heart blood volume will increase thus increasing the heart load The heart will do more work, and the heart muscle will need more oxygen and blood, so the heart will beat faster. After drinking alcohol, the stomach swells and reflexively causes sympathetic excitation, which makes the heart beat faster. 3. hypoglycemia, if accompanied by dizziness, sweating, weakness, hunger, and after eating dessert, the symptoms are relieved, indicating hypoglycemia, because alcohol affects sugar isogenesis. 4. electrolyte disorders, if the person who drinks too much alcohol has vomiting, there may be electrolyte loss, such as low blood potassium, etc., which can lead to rapid arrhythmia, so Feel the rapid heartbeat.