LDL cholesterol 5.31mmol/L is not normal, belongs to the high, normal value generally need to be controlled between 2.1 ~ 3.1mmol/L. If young people, in the absence of cardiovascular and cerebrovascular diseases and other risk factors, LDL cholesterol 5.31mmol / L, you can not need to take medication, through the daily life can be adjusted to adhere to three months to maintain a low-salt and low-fat diet, more running and swimming and other aerobic exercise, weight control, quit smoking and alcohol, etc., basically can be restored to normal. If you have coronary heart disease, heart attack, cerebral infarction, cerebrovascular disease and other medical history of patients or the elderly and other high-risk groups, LDL cholesterol 5.31mmol / L must be timely lipid lowering, otherwise easy to induce atherosclerosis, diabetes and other complications. Lipid-lowering drugs such as atorvastatin, pravastatin or Rosuvastatin can be taken as prescribed by the doctor. It is recommended to lower LDL to the normal range by adjusting daily life or taking medication as prescribed by the doctor according to one’s own situation, so as to reduce the risk of cardiovascular and cerebrovascular diseases or other complications.