Patients may have elevated blood pressure during the acute phase of a cerebral infarction, and some patients may have normal blood pressure. Because of the sudden decrease in blood supply to the brain of the patient in the event of cerebral infarction, it may rebound to cause an increase in blood pressure. Because the human brain has regulatory functions, it may cause high blood pressure, but some patients’ blood pressure remains normal. The main risk factors that cause cerebral infarction include hypertension, diabetes, hyperlipidemia, and hyperhomocysteinemia. All of these diseases are risk factors for triggering cerebral infarction, which can aggravate the degree of cerebral atherosclerosis in patients and easily lead to cerebral thrombosis. Atrial fibrillation and heart valve disease leading to dislodgement of the attached wall thrombus are also major causes of cerebral infarction.