Atorvastatin is a lipid-lowering drug and is usually recommended to be taken at bedtime to increase the efficacy of the drug. Atorvastatin is a clinically used lipid-lowering drug, mainly for the treatment of patients with coronary heart disease and hyperlipidemia. Atorvastatin can be taken at any time of the day and is not affected by eating. However, the peak of cholesterol synthesis is at 12 midnight. Taking statins 2-3 hours before the peak of cholesterol synthesis can effectively inhibit cholesterol synthesis. Therefore, patients are usually clinically advised to take atorvastatin before going to bed. In addition, if there are no adverse effects of statin drugs, patients should take them for a long time, and the longer they are taken, the greater the benefit to patients. Because atorvastatin can cause liver enzymes to rise liver function abnormalities, attention needs to be paid to monitoring liver function before and after use. In addition, patients should pay attention to their diet while taking the drug, avoid eating animal fat, animal liver and animal oil, and try to focus on lightness.