An elderly person’s heart rate at rest above 100 beats/min is relatively dangerous. The standard heart rate for adults at rest is 60-100 beats/min, which will gradually slow down as they age. The normal heart rate for the elderly is usually around 60-70 beats/min. If it exceeds 90 beats/min, the heart rate is considered abnormal. If the heart rate is too fast, the oxygen consumption of the heart muscle will increase, which will easily induce myocardial ischemia, especially for the elderly who suffer from cardiovascular and cerebrovascular diseases, the heart rate will reach more than 100 beats/min for a long time, which can cause the occurrence of angina pectoris and heart failure, etc. It is recommended that such patients should preferably control their heart rate at about 55 beats/min for the greatest relative benefit. However, if this heart rate is measured by the elderly after exercise, if the heart rate is between 104-135 beats/min after exercise, it is also normal, and the heart rate can be reduced to normal after a few moments of rest, then there is no need to worry too much. Appropriate exercise for the elderly can accelerate the heart rate, which helps the heart to control the heart rate and enhance its heart function. In addition, a reasonable low-salt and low-fat diet, quit smoking and limit alcohol can play a protective role for the heart of the elderly.