Increased pulse pressure is a clinical symptom mainly due to organic heart disease, severe anemia, hyperthyroidism and other diseases. Pulse pressure is the difference between systolic pressure minus diastolic pressure, with a normal value of 30-40 mmHg, and a range of more than 20 mmHg up and down is also considered normal, resulting in increased pulse pressure in the heart caused by diseases such as aortic valve insufficiency, rheumatic heart disease, syphilitic heart disease. Both the systolic and diastolic pressure of the heart are elevated, but the systolic pressure increases more than the diastolic pressure, so the pulse pressure increases. In the elderly, the increase in pulse pressure is mainly due to decreased diastolic pressure caused by vascular sclerosis diseases such as aortic sclerosis, and in young people, the increase in pulse pressure is mainly considered to be caused by organic heart diseases, hyperthyroidism, and severe anemia.