A blood pressure of 140mmHg/90mmHg or less is relatively safe in the elderly. Low pressure around 60-90mmHg and high pressure between 90-140mmHg are relatively healthy blood pressure values, and the ideal blood pressure value is usually 120/80mmHg. If the standard is not exceeded, but the high pressure is 130-139mmHg or the low pressure is 80-89mmHg, it is considered normal high blood pressure. Patients with diabetes and chronic kidney disease, blood pressure should be maintained at about 130/80mmHg, which can effectively reduce the probability of complications. In general, blood pressure will gradually increase slowly as we age. This is because with age, the elastic fibers of blood vessels gradually decrease and the deposits of blood vessel walls increase, thus reducing the elasticity of blood vessel walls and aggravating vascular sclerosis. The diastolic function of blood vessels decreases compared to before, and with the contraction and diastole of the heart, when blood pressure is measured, the low pressure value is likely to decrease compared to before, and the high pressure value is likely to increase compared to before. Therefore, relatively speaking, the blood pressure value of the elderly may be higher than that of the young.