People with cerebral infarction can have low blood pressure, there are two possibilities: first, the patient himself has low blood pressure, cerebral infarction is caused by hypertension disease, the patient’s long-term hypertension leads to atherosclerosis of the arteries, producing plaque, local stenosis or occlusion, and blood pressure fluctuates violently when it is easy to spasm to form thrombus, leading to cerebral infarction. However, there is a more special condition called hypoperfusion infarction, in which the patient’s blood pressure is too low leading to insufficient perfusion in the brain, which is more likely to occur in areas with occlusion and stenosis of blood vessels, causing power infarction, mostly seen in frail elderly people, patients with acute upper gastrointestinal bleeding leading to hemorrhagic shock, or patients with low blood pressure and massive blood and fluid loss during surgery. Second, patients with cerebral infarction themselves have hypertensive disease, but there are various complications after cerebral infarction, leading to cardiac circulatory failure or having severe infection, resulting in infectious shock, which can cause hypotension.