In normal people, there is no ischemic foci in the brain. Ischemic foci in the brain are caused by occlusion of small arteries in the brain, resulting in ischemia and hypoxic necrosis of local brain tissue. It is common in some hypertensive patients and diabetic patients because of long-term poor blood pressure control and poor blood sugar control, which leads to the hardening of small arteries in the brain. The main treatment is to start the secondary prevention of cerebrovascular disease and prevent the occurrence of cerebral infarction, and to routinely take oral aspirin for anti-platelet aggregation treatment. The patient can be given oral medications to promote blood circulation and eliminate blood stasis, such as vermifuge and snake capsules and compound Dilong capsules to improve the patient’s blood supply.