The blood pressure of patients with lacunar cerebral infarction is not necessarily elevated, because the main cause of lacunar cerebral infarction is the sclerosis and occlusion of small arteries in the brain, and the interruption of blood flow leads to the patient’s focal necrosis of brain tissues and brain cells, and the formation of neurological deficits. Because the infarction area is relatively small, there will not be very serious symptoms of cerebral edema, and the patient’s blood pressure will not fluctuate significantly. If the patient has previous hypertension, the patient’s blood pressure may increase during the period of lacunar cerebral infarction, mainly depending on the patient’s basal blood pressure level. Because there are many causes of lacunar cerebral infarction, in addition to hypertensive disorders, there are also diabetes mellitus, hyperlipidemia, and hyperhomocysteinemia, which are also the main causes of aggravation of atherosclerosis of the small capillaries in the brain of the patient.