For normal people LDL 3.3 mmol/L is not serious, but the minimum standard required varies for different underlying diseases. Increased LDL can be used to determine risk factors for coronary heart disease, and there is a positive correlation between higher and lower values and coronary heart disease. Different risk strata have different values for treatment attainment: low or intermediate risk requires less than 3.4 mmol/L, high risk requires less than 2.6 mmol/L, and very high risk requires less than 1.83 mmol/L. Extremely high risk that is, patients with atherosclerosis, high-risk patients with high blood lipids combined with diabetes, etc. However, the grading of the degree of risk is more complex and related to a variety of factors, and should be timely medical care, with the help of a professional doctor to adjust the target reference value of LDL.