The main causes of cardiovascular and cerebrovascular diseases are complex, smoking, hypertension, diabetes and other factors can lead to such chronic diseases. 1. Smoking: Tobacco contains a large number of harmful substances, long-term smoking is very damaging to the arterial blood vessels, which is one of the main causes of atherosclerosis, and is also the main risk factor for coronary heart disease, cerebral infarction and other cardiovascular diseases. 2. Hypertension: long-term pressure on blood vessels, leading to ischemia of blood vessels, and ultimately atherosclerosis leading to cardiovascular and cerebrovascular diseases. 3. Diabetes mellitus: the long-term elevation of blood sugar is also a big stimulus to blood vessels, which in the long run will lead to endothelial damage of blood vessels, resulting in atherosclerosis and thus causing cardiovascular and cerebrovascular diseases. In addition, there are many other causes such as congenital cardiovascular disease due to genetic factors, infectious factors and so on. It is recommended to have a healthy routine, balanced diet and a good lifestyle to reduce the incidence of cardiovascular and cerebrovascular diseases. When discomfort occurs, consult a doctor promptly.