The severity of LDL 4.01 mmol/L above the normal range needs to be determined by risk stratification; Not having hypertension and having less than 3 other risk factors is considered low risk, having hypertension and having a number of other risk factors greater than or equal to 1 is considered intermediate risk, and having coronary heart disease and other complications is considered high risk. Low-risk refers to a risk of ischemic cardiovascular events of less than 5% within 10 years, 5% to 10% is intermediate risk, 10 to 15% is high-risk, and very high-risk patients are defined as acute coronary syndrome or ischemic cardiovascular disease combined with diabetes. LDL 4.01mmol/L need to go to the hospital, identify the cause and symptomatic treatment.