For patients with stroke, clinical symptoms include sudden hemiparesis, numbness, slurred speech or inability to speak, unstable walking, dizziness, nausea and vomiting, double vision, visual field loss, difficulty in swallowing, etc. In severe cases, consciousness impairment may also occur. In the acute stage, the patient can be given a CT head examination to rule out cerebral hemorrhage, which can basically be designated as ischemic cerebrovascular disease. The patient can also be given a complete head MRI, which can reveal the brain infarction in 2 hours, to identify the cause of ischemia or hemorrhage, and give the patient the corresponding treatment for the cause. After the acute treatment, most of the patients can recover clinically, and the subsequent rehabilitation can be carried out.