The normal value of serum cholesterol is between 2.9-6.0 mmol/L. Keeping cholesterol within the normal range can effectively ensure the rate of fat metabolism by the liver and also help maintain the elasticity of blood vessels, which can prevent cardiovascular diseases. Elevated cholesterol levels due to poor lifestyle and dietary habits or other diseases can increase the risk of developing cardiovascular diseases, such as coronary arteriosclerotic heart disease. Elevated cholesterol can lead to an increase in HDL levels, and as a result, fat in the peripheral blood cannot be properly transferred to the liver for metabolism, which in severe cases can lead to a fatty liver. It causes a decrease in the metabolic capacity of the liver, leading to hepatitis, cirrhosis or other malignant diseases, and the main clinical symptoms include ascites and spider nevus. Patients are often clinically complicated with other diseases such as hypertension and diabetes, so it is important to check blood lipid cholesterol and other indicators regularly.