Pulmonary arteriosclerosis is a common and frequent disease that can lead to right heart failure in severe cases, a condition with a high mortality rate, and requires extra care once the condition is diagnosed. Pulmonary arteriosclerosis causes thickening of the walls of the pulmonary arteries, narrowing of the lumen, and greater resistance to pulmonary circulation, leading to pulmonary hypertension, increased right heart load, and enlargement and thickening of the right ventricle, resulting in right heart failure, or hardening of the arterial vessels. Blood pressure fluctuations are too large, which can lead to arterial vascular rupture. Under normal circumstances, the aortic blood flow is high and will not rupture easily, but the potential danger still exists. However, thrombosis is more serious. Atherosclerosis is usually caused by the deposition of lipids in the walls of blood vessels, and in addition to blocking the blood vessels and preventing them from flowing normally, thrombi may fall off into smaller vessels and completely occlude them, causing myocardial infarction or cerebral infarction.