A total cholesterol of 6.33 mmol/L is usually abnormal and represents an elevated total cholesterol level. Cholesterol is one of the components of human body lipids, mainly including free cholesterol and cholesteryl esters. The level of serum total cholesterol may be affected by heredity, dietary factors, familial factors, age factors and so on, and there is no standardized and precise reference data. However, generally speaking, the more appropriate reference level is not more than 5.2mmol/L, 5.2~6.19mmol/L is borderline elevated, and when it reaches 6.20mmol/L and exceeds this level, it can be called elevated total cholesterol level. Elevated total cholesterol is one of the unfavorable factors of atherosclerotic changes in human body, which can easily lead to cerebral infarction, myocardial infarction and other cardiovascular and cerebrovascular diseases, which is unfavorable to human health. It is recommended to consult a doctor in time and standardize the treatment under the doctor’s guidance.