The efficacy of atorvastatin, mainly has the following aspects: 1, the role of lowering blood lipids. Especially for patients with hyperlipidemia, taking this drug can effectively reduce blood lipids, mainly cholesterol and low-density lipoprotein, and triglycerides also have a certain reduction effect. 2, the role of stabilizing arterial plaque. Especially for the atherosclerotic plaque of coronary artery, the application of this drug can stabilize the plaque, reduce the surface tension of the plaque, make the fibrous cap on the surface of the plaque less likely to rupture, thus reducing the risk of plaque rupture, bleeding and secondary thrombosis, etc. 3, improve the function of vascular endothelium. The main mechanism may regulate the diastole of blood vessels through the metabolism of carbon monoxide.4. Certain anti-platelet efficacy, this drug has an auxiliary effect on anti-platelet, which reduces the risk of thrombosis to a certain extent.