Atorvastatin calcium tablets belong to the statin class of lipid-regulating drugs, which can play a competitive role in inhibiting the rate-limiting enzymes in the process of cholesterol synthesis, reducing cholesterol synthesis and increasing LDL receptor synthesis, with the main site of action being the liver. Therefore, it plays a very important role in the prevention and treatment of atherosclerosis and coronary heart disease. Atorvastatin calcium tablets are mainly used clinically in patients with hypercholesterolemia, especially in primary hypercholesterolemia, including familial hypercholesterolemia or mixed hyperlipidemia. In general, adults should take 20mg-40mg once a day after dinner. During the course of administration, attention should be paid to monitoring adverse reactions, individual gastrointestinal discomfort may occur, most of which are tolerable.