Whether the pulse rate of 56 beats/min is normal or not needs to be decided according to the basic state. For patients with coronary heart disease, a pulse rate of 56 beats equal to the heart rate is also a heart rate of 56 beats/min. For patients with coronary heart disease, it is recommended that the range of heart rate control is between 55-65 beats/min and the pulse rate of 56 beats/min is normal. In addition, the heart rate of elderly people may be low, and a pulse rate of 56 beats/min is also normal. For patients with atrial fibrillation, the phenomenon of pulse dystocia can occur, with a pulse of 56 beats/min, while the heart rate is more than 60 times/min or even above, which is not normal and belongs to the heart rate of atrial fibrillation, so it is not possible to judge whether it is normal based on a simple pulse of 56 beats/min.