Presenile mice were used to establish the vascular dementia model characterized by disturbance in learning and memorizing by the method of cerebral ischemia reperfusion and blood pressure reduction through tail bloodletting. The therapeutic effects of Congsheng Capsules (CC) on disturbance in learning and memorizing and cerebral pathological injuries were observed. The results showed that the learning and memorizing abilities could be obviously decreased by performing repeated ischemia reperfusion of bila...