LDL 4.0 mmol/L is mildly elevated. The normal value of LDL is 0-3.37mmol/L, 4.0mmol/L belongs to mildly elevated, the patient if there is no obvious risk factors, there is no need for oral medication, to control the diet, reduce the intake of high-fat food, increase the intake of vegetables, at the same time to pay attention to strengthen the physical exercise, increase the consumption of nutrients. Mildly elevated LDL levels, if accompanied by a variety of risk factors, such as family history of early-onset cardiovascular disease, hypertension, diabetes mellitus, etc., belong to high-risk groups, to be treated with oral statin drugs, such as atorvastatin. Patients with elevated LDL should be treated with intensive monitoring and adjustments to their treatment regimen under the guidance of their physician.