Objective: To find a good way to diagnose VD,value the effect of Yishen Yangnao capsule on VD and try to find some rules of changes in Chinese medicine syndromes.

• 目的:寻找诊断血管性痴呆的有效方法,观察颐神养脑胶囊治疗血管性痴呆的疗效以及中医证候的演变规律。