Cerebral ischemic degenerative foci refer to lacunar cerebral infarction and cerebral white matter demyelination disease, formed because of cerebral arteriosclerosis, cerebral blood supply deficiency and other reasons, resulting in brain tissue malnutrition and caused. Most of the patients have no obvious symptoms, but are found to have ischemic foci during the CT or MRI of the head during the physical examination, and the most common sites are in the bilateral frontal lobe, basal ganglia and radiocoronal area. The white matter demyelination is caused by chronic ischemia and hypoxia, resulting in neurological dystrophy in the white matter of the brain, which can manifest clinically as cognitive decline, walking delay, and urinary incontinence.