Objective To observe the therapeutic effects of various traditional Chinese medicinal prescriptions on learning and memory disorders in model mice with vascular dementia caused by repeated cerebral ischemia. Methods The model of mice with vascular dementia was made by occluding bilateral carotid artery repeatedly three times for ten minutes per time. All the mice were tested by Step down test and the effects of various prescriptions on them were observed. Results We compared JianNao YiZhi Decoction w...