Intracranial ischemic foci, also known as cerebral ischemic foci, is an imaging description reported on an MRI of the brain that suggests chronic ischemia of the brain tissue. Cerebral ischemic foci are an imaging manifestation of ischemia and hypoxia in the brain caused by a variety of reasons for poor blood flow through the arterial system of the brain tissue. Clinically, there is usually no clear clinical manifestations, and some patients may have symptoms such as dizziness and memory loss, which are detected by examining cranial CT or MRI. Cerebral ischemic foci occur more often in the elderly with a history of smoking, alcohol consumption, hypertension, diabetes and other risk factors for cerebrovascular disease. When ischemic foci are detected, it is necessary to consult a doctor in time and follow the doctor’s instructions to control the risk factors and prevent its further progress.