In a cerebral infarction, blood pressure can be elevated or lowered, or it can be normal. Patients with high blood pressure and low blood pressure can cause cerebral infarction. In hypertensive patients, most of them have a history of cerebral atherosclerosis. Long-term high blood pressure can make cerebral blood vessels form plaques or vascular occlusion, causing ischemic and hypoxic changes in the corresponding parts and causing cerebral infarction. In patients with low blood pressure, slow blood flow can cause ischemia and hypoxia in the cortical branches of the distal cerebral vessels, causing acute cerebral infarction. The occurrence of cerebral infarction is mostly related to cerebral atherosclerosis, too high or too low blood pressure on the development of cerebral infarction has a certain effect, in addition to cerebral infarction patients, some of the patients’ blood pressure can be normal. In the acute stage of cerebral infarction, oral nifedipine tablets are not generally recommended for rapid blood pressure reduction, and smooth blood pressure reduction is usually recommended. Usually low-salt and low-fat diet, eat more vegetables and fruits, drink more water, control weight, lower blood pressure, lower fat, prevent vascular sclerosis, prevent the occurrence of cerebral infarction.