Brain blockage refers to the blockage of cerebral blood vessels, also known as ischemic cerebrovascular disease, or cerebral infarction. It is mainly caused by atherosclerosis, which leads to the thickening of the lumen walls of blood vessels, narrowing of the lumen, gradual slowing of blood flow, and finally blockage of blood vessels. The corresponding symptoms of neurological deficits may appear, such as dizziness, headache, dumb speech, numbness and weakness of the limbs. The diagnosis can be confirmed by CT or MRI of the head, and also by MRI or CT of the cerebral blood vessels to assess the general condition of the blood vessels. For cerebral blockage caused by cerebrovascular atherosclerosis, patients are advised to actively initiate secondary prevention of cerebrovascular disease by taking oral antiplatelet aggregation and circulation improvement drugs, as well as giving oral medications to protect the intima, such as statins. Outpatient monitoring of lipids, blood pressure, blood glucose, serum homocysteine, and cervical vascular ultrasound is recommended for six months to a year.