Ischemic foci in the head are partly cerebral infarction, mostly lacunar cerebral infarction. Ischemic foci in the head mainly appear in the case of small arterial sclerosis and occlusion, resulting in the formation of ischemia, hypoxia and necrosis of local brain tissue and brain cells. Head ischemic foci will not have obvious symptoms clinically, but it suggests that the patient has extensive small arteriosclerosis and is prone to cavernous cerebral infarction, presenting a cavernous state. Therefore, it is necessary to carry out active and effective prevention for the risk factors causing cerebral ischemic foci in patients in the clinic. Patients should have a low-salt, low-fat diet, quit smoking and limit alcohol. In terms of medication, patients should take aspirin or clopidogrel bisulfate orally for anti-platelet aggregation treatment to prevent the aggravation of cerebral atherosclerosis.