Objectives : In this case report, we will present a patient with dementia with Lewy bodies improved by application of oriental medical treatments. Methods : A 82 year-old female patient has been suffered by dementia with Lewy bodies for 7~8 years. We treated the patient with Herbal medication and acupuncture. The effects of treatment were measured by MMSE-K (Mini-Mental State Examination-K). Results : As a result of oriental treatments, the quality of sleep was improved, also the level of cognition was improved. Conclusions : These results suggest that oriental treatments have an effect on Dementia with Lewy bodies.