Infarct focus means that after the sudden interruption of cerebrovascular blood flow, resulting in local brain tissue necrosis, this area is called cerebral infarct focus, the formation of the cause of atherosclerosis, hypertension, long-term poor blood sugar control, high lipids and high viscosity state are related to a certain extent, and cardiogenic embolism caused by cerebrovascular blockage, so in the clinical must actively target risk factors for prevention. For example, patients with atrial fibrillation should be given oral warfarin anticoagulation therapy to prevent the occurrence of cerebral infarction due to cardiogenic embolus dislodgement. In case of cerebral atherosclerosis and cerebral thrombosis, patients should usually take oral aspirin or clopidogrel to antiplatelet aggregation and prevent the occurrence of cerebral infarction. If there is unstable and inhomogeneous plaque in the neck blood vessels, oral atorvastatin calcium tablets and rasulvastatin calcium tablets should be taken to lower lipid and stabilize plaque and protect vascular endothelial treatment.