The normal value of serum LDL cholesterol should be less than 2.6 mmol/L. If the patient has coronary heart disease, hypertension, or even a previous acute myocardial infarction, it is advisable to keep LDL cholesterol below 1.8 mmol/L. If the patient is a normal young patient and does not have any underlying disease, controlling LDL at the ideal level, which is less than 2.6 mmol/L, is recommended. It is recommended that the patient should pay attention to a low salt and low fat diet, quit smoking and drinking, adhere to exercise and weight loss, and eat more fresh fruits and vegetables, so as to better keep LDL cholesterol from exceeding the limit. Because LDL cholesterol can relatively lead to the occurrence of atherosclerosis, great importance is attached to this indicator in clinical practice. If this indicator is elevated, it is recommended to take oral statins, and the representative drugs are atorvastatin and rasulvastatin.