Differential pressure between 50~70mmHg is not normal, generally the normal range of differential pressure is 30~40mmHg. Differential pressure is clinically known as pulse pressure, which is the difference between systolic pressure and diastolic pressure, usually more in 30~40mmHg. Pulse pressure of 50-70mmHg is abnormal, 50-60mmHg is a critical value, and more than 60mmHg is called increased pulse pressure. Increased pulse pressure can lead to a number of diseases, for example, pulse pressure >63mmHg as a risk factor for the formation of atherosclerosis (AS), and the elderly with atherosclerosis are prone to increased pulse pressure. Increased pulse pressure can also be seen in rheumatic heart disease, such as the involvement of the aortic valve leading to closure insufficiency, often manifested as increased pulse pressure difference. In addition, congenital heart disease, hyperthyroidism, severe anemia may have increased pulse pressure, so the recent repeated measurement of blood pressure found that the pulse pressure of 50-70mmHg, you should consult a doctor in a timely manner, to clarify the cause of the diagnosis and treatment under the guidance of a physician, to avoid delays in the condition.