In recent years, with the continuous improvement of people’s living standard and changes in diet structure and lifestyle, the overall blood lipid level of the population is rising year by year, and thus the cardiovascular and cerebrovascular diseases in China are also on the rise year by year. In the early 1990s, about 60% of people in the United States exceeded the standard of borderline hyperlipidemia. In the early 1990s, the blood lipid level in China increased significantly compared with that in the 1980s, especially in the big cities in the north, about 30% to 40% of people suffered from different degrees of abnormal lipid metabolism that exceeded the borderline standard, i.e. hyperlipidemia. Therefore, it has become imperative to pay attention to and control hyperlipidemia in the whole society. The fatty substances in the human body are the main source of energy necessary for the body and are also involved in many metabolic processes for the normal structure and function of the body’s cells and tissues. For example, fat is one of the components of various cell membranes in the body and participates in the tissue repair process. However, if there is excess fat in the body, it will be deposited in the walls of arteries and produce atherosclerotic plaques under the synergistic effect of other damage factors, which will gradually narrow or block the lumen of blood vessels and cause ischemia or infarction in the tissues and organs supplied with blood. Lipids are produced both in vivo and in vitro, with the former being synthesized mainly in the liver and the latter being taken up in the diet. Lipids in the blood are combined with proteins to form lipoproteins. LDL carries cholesterol into the surrounding tissues (including blood vessels), while HDL reverses the transfer of cholesterol from the tissues to the liver. Any etiology that can cause increased synthesis, decreased breakdown and increased intake of fat in the body can lead to hyperlipidemia. Common causes: 1, high cholesterol: excessive intake of saturated (animal) fat in the diet, cirrhosis of the liver, poorly controlled diabetes, low A, kidney disease and hereditary hypercholesterolemia. 2, high triglycerides: excessive caloric intake, alcohol abuse, uncontrolled severe diabetes, kidney disease, certain drugs (such as estrogen, etc.) and hereditary hypertriglyceridemia. According to the etiology, hyperlipidemia is clinically classified into two categories: primary and secondary. The latter is caused by other diseases and has a lower incidence. Primary hyperlipidemia may be associated with relevant genes, abnormalities of lipoproteins and their receptors or enzymes, and also with many other risk factors for atherosclerosis.