Subcortical ischemic vascular disease （SIVD） is a group of ischemic cerebrovascular diseases caused by small-vessel disease,and the major pathological damage is multiple subcortical lacunar infarction and white matter lesions.SIVD is the most major cause of resulting in vascular cognitive impairment.It can also have gait disorders,such as Parkinsonlike gait,frontal gait,ataxia,or frequent fall without obvious inducement,etc.Several studies have shown that the gait abnormalities in the elderly may be the early signs of vascular dementia.This article reviews SIVD caused pathomechanisms,clinical features,clinical significance,analysis and evaluation and treatment of gait disorders.