The normal adult heartbeat is 60-100 beats per minute. If the heartbeat is 60 beats per minute, it is considered bradycardia, and if the heartbeat exceeds 100 beats per minute, it is considered tachycardia. The causes of bradycardia and tachycardia can be seen in the normal population or in patients with organic heart disease. Patients with heart disease need to be examined and treated with effective medication under the guidance of a doctor to treat the primary disease and regulate the abnormal heart rate. Patients with unstable vegetative nerve function do not need to be treated with medication, but through life conditioning, paying attention to rest, not staying up late, and strengthening aerobic exercise, the rhythm of the heart rate can be improved and the fast or slow heart rate can be improved.