1, hypertension is the main cause of atherosclerosis It is well known that atherosclerosis is currently the most common cause of cardiovascular disease. Atherosclerosis is the result of a variety of genetic and environmental factors, and current research has found that hypertension plays an important role in the pathogenesis of atherosclerosis, including increasing the permeability of the vascular endothelium, prolonging the contact time between lipoproteins and the vascular wall, and reducing the endothelium-dependent vasodilatation. In China, hypertension is the No. 1 risk factor for cardiovascular disease in the population and an important independent risk cause for the high incidence of stroke in particular. Therefore, the prevention of cardiovascular disease for hypertensive patients is of great significance and responsibility. 2, elevated blood pressure is the main trigger of cardiovascular disease attacks In the clinic, hypertension is also a trigger of cardiovascular disease attacks, some data show that blood pressure since 115/75mmHg, every increase of 20/10mmHg, cardiovascular disease mortality increased by 1 times. Studies have proven that stacked thrombi formed on the basis of plaque rupture or plaque erosion often lead to the occurrence of fatal clinical cardiovascular events (e.g., acute coronary syndromes, strokes, etc.). When blood pressure is too high especially in the early morning when blood pressure is elevated plaque is prone to rupture so the mechanisms associated with the morning peak of cardiovascular disease include multiple aspects, rapid increase in sympathetic nervous system activity before and after waking, increase in peripheral vascular resistance and cardiac output, activation of the renin-angiotensin-aldosterone system, release of catecholamines, vasoconstriction, increase in blood pressure and sudden changes in intravascular luminal pressure; continuous 24h measurement of platelet activity found Early morning 6:00-9:00 a.m. platelet aggregation force is significantly elevated, and some studies suggest that early morning blood pressure elevation correlates with increased ADP-induced platelet aggregation and spontaneous platelet aggregation; on the contrary, blood tissue fibrinogen activator and tissue fibrinogen activator inhibitor-1 activity decreases, which decreases the role of blood fibrinogen, both of which contribute to early morning blood hypercoagulation and promote thrombosis. 3, blood pressure changes are the main manifestation of cardiovascular disease attacks When cardiovascular disease attacks, stable blood pressure will appear unstable, which is due to cardiovascular disease attacks caused by changes in cardiovascular active substance activity resulting in fluctuations in blood pressure changes, often preceding the traditional clinical symptoms. For example, some transient ischemic attacks are preceded by fluctuating changes in blood pressure and followed by neurological signs. When cardiovascular disease strikes, blood pressure is also difficult to control, such as when renal artery stenosis activates the renin-angiotensin system, making it difficult to control blood pressure. Therefore, controlling blood pressure can prevent the occurrence of cardiovascular disease, and paying attention to blood pressure changes can detect important clues of cardiovascular disease in time.