Objective : In western medicine, many medication therapies and non-medication therapies have been treated for dementia. But these methods did no more than symptomatic therapies, not basic treatment, which just can better subordinate symptoms. In fact, care or control became the very point of treatment of dementia. So, to try to find oriental medical treatments for Dementia, a clinical analysis was carried out for 84 patients who were diagnosed as Dementia through MMSE-K and treated in Dong-shin Oriental Medicine Kwangju Hospital and Karitaas Sanatorium from 10. Jan. 1998 to 20. May. 2000. Methods : Regardless of patterns of Dementia, the basic treatment(本治) is to supplement encephalon deficiency(腦髓不足). And the external treatment(標治) must be accompanied by through diagnosis according to symptoms(辨證). All patients were given Yukmi-jihwanghwan gami and acupuncture treatment. Results : Dementia of cerebral vascular type shows a high distribution(51 patients, 60.7%). Women also are distributed more widely(62명, 73.8%). In Age distribition, 70-79 years-32 patients(38.1%), over 80 years-21 patients(25%), 60-69 years-17 patients(20.2%), 50-59 years-13 patients(15.5%) and under 49 years-1 patient(1.2%). From this, Dementia occurs well over 60 years and the rate of occurrence of Dementia is high as people grow older. In past history of people with Dementia, hypertension is associated much(50 patients, 64.1%). Distribution of mental state by MMSE-K examination declined in orientaion, mathmatical faculty, memory faculty and composition faculty. In therapeutic effect by treatment duration, 14 patients(93.3%) out of 15 in sanatorium show a significant effect. And 52 patients(75.4%) out of 69 in the hospital show the same result. Especially, 11 patients with Alzheimer type in sanatorium showed an good effect when treated over 4 months. 40 patients(83.3%) with cerebral vascular type out of 48 in the hospital showed the stage of betterment. Conclusions : The basic treatment(本治) for Dementia is to supplement encephalon deficiency(腦髓不足). For promoting encephalon through supplementing kindney(補腎健腦), All patients were given Yukmi-jihwanghwan gami. And the external treatment(標治) through diagnosis according to symptoms(辨證) were be accompanied by. The result is quite effective. We consider there must be more research based on this study.