Carotid intima-media thickening is usually not very serious, but requires prompt treatment. Carotid artery intima-media thickening is usually determined by color Doppler ultrasonography. The normal thickness of the middle layer of the arterial intima-media should be less than 1mm, and if it is between 1.0~1.2mm, it is a case of intima-media thickening. If it is not treated in time, it will continue to thicken and gradually form plaques and stenosis. Since carotid artery intima-media thickening has a relatively small effect on blood flow and has not yet caused ischemia or hypoxia, it is less serious and can be treated with medications such as aspirin and simvastatin to reduce the risk of plaque formation. If left untreated, it may develop into carotid plaque or carotid stenosis, which in turn may cause tissue ischemia and hypoxia, posing a threat to health. Therefore, it is important for patients to intervene in a timely manner to control the progression of the disease.