Atherosclerosis is a natural process, but many physical and chemical factors will accelerate this process, called etiology, mainly including physiological factors and pathological factors in two aspects: 1. Physiological factors: physiological factors include age, gender, family history and lifestyle, the age of men, the chances of atherosclerosis significantly increased in people with cardiovascular and cerebrovascular disease. But we are usually talking about the cause refers to some bad lifestyle, common causes include: (1) smoking: tobacco contains a large number of toxic and harmful substances, such as nicotine, benzene, etc., through the respiratory tract into the blood will directly cause damage to blood vessels, causing vascular damage, leading to the development of atherosclerosis, smoking second-hand smoke has the same harm; (2) high-fat diet: disease from the mouth. In recent years, people’s living standards have improved, the diet structure has changed greatly, high-fat diet, as well as the increase in processed foods, so that people consume too much lipids, it is difficult to be metabolized and consumed, deposited in the body, including the blood vessels, in the role of other factors to form atherosclerosis; (3) lack of exercise: exercise can increase cardiovascular function, consume excess calories, lack of exercise, the loss of these vascular protective measures, vascular elasticity decreases, blood flow becomes slower, easily causing lipid deposits to form atherosclerosis; 2, pathological factors: pathological factors refer to some diseases that lead to atherosclerosis, these diseases will accelerate the process of atherosclerosis, leading to the occurrence of cardiovascular disease, common causes include: (1) hypertension: hypertension patients have a significantly higher incidence of atherosclerosis, hypertension will cause vascular (2) hyperlipidemia: too much intake or too little consumption can lead to hyperlipidemia, especially hypercholesterolemia, which is the most important pathogenic factor of atherosclerosis; (3) diabetes mellitus: diabetes mellitus can also cause direct damage to blood vessels, and at the same time, diabetes mellitus is prone to hypertension and hyperlipidemia, thus increasing the incidence of atherosclerosis. (3) diabetes mellitus: diabetes mellitus also causes direct damage to blood vessels. The development of atherosclerosis is related to the lifestyle of smoking, high-fat diet and lack of exercise, so a healthy lifestyle is promoted; at the same time, it is related to the diseases of hypertension, hyperlipidemia and diabetes, so these diseases should be actively controlled. With a two-pronged approach, the development of atherosclerosis can be delayed.