Lipitor, the generic name of which is Atorvastatin Calcium Tablets, is a 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase inhibitor, a lipid-lowering drug that focuses on lowering total cholesterol and lowering density lipoprotein cholesterol (LDL-C). Statin lipid-lowering drugs, represented by atorvastatin, are not only used for the treatment of hypercholesterolemia, but also have the effect of reversing atherosclerotic plaque, which can be used for the prevention and treatment of coronary heart disease, stroke and other cardiovascular and cerebrovascular diseases. For every 1 mmol/L reduction in LDL-C by statin lipid-lowering drugs, the relative risk of major cardiovascular events is reduced by 20% and all-cause mortality is reduced by 10% [1]. For patients with coronary artery disease or critical conditions such as coronary artery disease (e.g., diabetes mellitus, symptomatic atherosclerotic disease, etc.) combined with hypercholesterolemia or mixed dyslipidemia, it reduces the risk of nonfatal myocardial infarction, the risk of fatal and nonfatal stroke, the risk of revascularization, the risk of hospitalization for congestive heart failure, and the risk of angina pectoris.