Objectives : The aim of this study was to describe the clinical aspects in dementia outpatients who visited oriental neuropsychiatry clinic and to analyze the efficacy of herbal medicine. Methods: We analysed medical records of dementia outpatients who visited oriental neuropsychiatry clinic of K medical center from August. 2000 to July, 2010 and matched our criteria. Results: Ninety-two subjects were selected for analysis and consisted of 77.3% dementia of Alzheimer type. 13.0% vascular dementia. and 9.8% mixed type of dementia. Herbal medicine prescribed mainly were Jowjseungchung-tang(Tiaowejshengqing-tang). Kunneo-tang(Jjannao-tang) and Chenwangbosim-dan(Tianwangbuxin-dan) for dementia of Alzheimer type, and Sunghyangjungki-san(Xjngxjangzhengqi-san) and Upung-dan (Yufeng-dan) for vascular dementia. Scores of K-DRS were not changed for some subs cales and decreased but less than natural decline of Alzheimer disease. Score on the Memory subscale in group of Kunneo-tang(Jjannao-tang) increased significantly. Conclusions : These results suggest that the herbal medicine may be effective for dementia. More prospective studies are needed to assess the efficacy and prognosis of herbal medicine for dementia. Clinical guideline is needed for systematic data accumulation.