It doesn’t matter if the blood pressure difference is 20-30mmHg, just test it from time to time. Usually when measuring blood pressure, three indicators are often noted: diastolic pressure, systolic pressure, and differential pressure. The difference between systolic and diastolic blood pressure is called pulse pressure. As the incidence of cardiovascular disease gradually increases, the increase in pulse pressure difference as an indicator for evaluating the risk of cardiovascular disease is also becoming more and more important. The normal range of pulse pressure difference is 30~40mmHg, more than 60mmHg is called pulse pressure increase. If the pulse pressure difference is often elevated, the risk of cardiovascular disease increases. There are various causes of increased pulse pressure, such as hyperthyroidism, hypertension, anemia, aortic valve insufficiency, and atherosclerosis. The most common of these is increased pulse pressure due to atherosclerosis. The cause is mainly due to aortic sclerosis, when the heart contracts, the hardened aorta can’t expand moderately, so the systolic blood pressure increases sharply; when the heart diastole, the aorta retracts weakly, and can’t push the blood forward sufficiently, so the diastolic blood pressure is too low. Systolic blood pressure shows a disproportionate increase and pulse pressure becomes larger. Regular medical attention is recommended if blood pressure abnormalities are present.