1. Objectives: This study is about three vascular dementia patients with disorientation, memory impairment and cognitive disorder. In this study, we evaluated the effects of Sasang constitutional treatment and suggested using the Mini Mental Status Examination - Korea (MMSE-K), Global Deterioration Scale (GDS). 2. Methods: These three patients were treated by Sasang constitutional herbal medications based on "Donguisusebowon". Acupuncture and west medications were limited as much as possible. We evaluated the symptoms through the Mini Mental Status Examination - Korea (MMSE-K), GDS (Global Deterioration Scale). 3. Results and Conclusions: Disorientation, memory impairment and cognitive disorder that were these three patients chief complaints were improved. This case study shows that Sasang constitutional herbal medications are an effective treatment for vascular dementia patients.