Carotid artery intima thickening is caused by atherosclerosis of the carotid artery, lipid deposition in the intima, formation of vacuolar cells, invasion of inflammatory factors, and the entry of platelets, which can lead to atherosclerosis of the intima, and in addition to the intima, the smooth muscle of the intima of the artery can also proliferate. The thickened intima will affect the blood supply to the lumen and lead to narrowing of the lumen, which will cause ischemia and hypoxia in the brain tissue, as well as insufficient blood perfusion in the arteries, resulting in dizziness and headache. In these cases, it is necessary to apply some medications and make lifestyle changes to remove the causes of atherosclerosis, which can inhibit the further development of atherosclerosis.