The risk of left vertebral artery occlusion can lead to insufficient blood supply to the brain, which can cause dizziness as well as difficulty swallowing, choking and coughing with water, etc. If left untreated, further aggravation of cerebral infarction can occur, and if both sides are occluded, it can lead to coma or even life-threatening. Therefore, when the left vertebral artery is occluded, it is possible to give vascular surgery. Diet should be light, eat more vegetables and fruits, and eat less fatty meat and so on. Treatment drugs can be given antiplatelet and lipid-regulating drugs, such as aspirin, and statin drugs, can play a preventive and therapeutic role.