Small cavernous infarction is not serious, the prognosis is good, the morbidity, mortality and disability rate is very low, but easy to recur.1, small cavernous infarction refers to the infarction foci are mostly foci with a diameter of 0.2-15mm, small cavernous infarction will not cause patients to appear serious symptoms in the clinic, in the clinic, the patient will be manifested as a simple limb of light activity is unfavorable or limb sensory obstacles, for example, limb light numbness and other problems. Patients may also have mild speech disorder or total disorders, and the main symptoms are related to the site of infarction.2. However, after repeated attacks of small cavernous infarction, it is easy to cause bilateral damage to the corticospinal tracts and cortical brainstem tracts of the patients, and cognitive function decline, resulting in patients with vascular dementia.