Lipid thickening examination index mainly includes the following points: First, the four items of blood lipid, the four items of blood lipid mainly refers to total cholesterol, triglyceride, LDL cholesterol, HDL cholesterol, fasting 12 hours and above before the examination, do not drink alcohol. Second, blood viscosity, lipid increase generally shows increased blood viscosity, increased aggregation of blood cells, increased vascular resistance, resulting in the body’s microcirculatory disorders, easy to occur thrombosis. Carotid ultrasound is the simplest and easiest way to detect carotid vascular lesions. It is often used to detect whether the carotid artery wall is sclerotic, and it can also clearly show the intima-media thickening, the site of plaque formation, the size of plaque and the degree of stenosis.