Purpose : To estimate the prevalence of and identity the associates of cognitive function and depression among people over 70 years of age, and to examine the relationship between cognitive impairment and depression, Methods : The elderly in Pusan area were studied on the Korea version Mini Mental Scale Examination instrument(MMSE-K), Short form of Geriatic Depression Scale(SGDS). Results : The prevalence of cognitive impairment($MMSE{leq}24$) was 64.4% and that of depression($GDS{geq}8$) was 40.7% Lower education, no religion and no work experience were associated with cognitive impairment. Depression in demented group was 68.2%, in suspect dementia group was 43.7% and in non-demented group was 9.5%. Conclusion : The prevalence of cognitive impairment and depression in elderly was high and depression was in association with cognitive impairment.