Cholesterol of 6.8 mmol/L is a high level and requires prompt intervention. The normal reference level of cholesterol is <5.2mmol/L, 5.2~6.2mmol/L is a borderline level of mild elevation, and over 6.2mmol/L is a significant elevation which is a dangerous level. Long-term cholesterol level increase can increase atherosclerosis caused by cardiovascular and cerebrovascular system diseases, such as coronary heart disease, cerebral infarction, etc., so it is necessary to intervene as soon as possible. Normally in life should pay attention to avoid greasy and high salt diet, quit smoking and drinking, maintain appropriate aerobic exercise. If necessary, you can take statin drugs such as atorvastatin and cholesterol absorption inhibitor ezetimibe under the guidance of a doctor. It is recommended to consult a doctor in time for standardized diagnosis and treatment.