The mortality rate of posterior circulation cerebral infarction is about 5%. Posterior circulation cerebral infarction mainly refers to necrosis in the area supplied by the vertebral artery, the basilar artery, and the posterior cerebral artery, which is called posterior circulation infarction, and mainly includes the brainstem, cerebellum, thalamus, hippocampus, occipital lobe, and part of the temporal lobe. In the case of posterior circulation infarction caused by basilar artery occlusion, the mortality rate can be as high as 90%, and even after aggressive thrombolytic therapy, the survival rate is only 50%. When a patient has a posterior circulation infarction, dizziness is the main manifestation, and the patient may experience unsteady walking, inflexible eye movements, pupillary abnormalities, ataxia, dysarthria, medullary paralysis, dysphagia, and inflexible limb movements.