Aim: This study was purposed to compare the psychometric properties between the Korean version of Behavior Rating Scale for Dementia(BRSD-K) and Neuropsychiatric Inventory(NPI-K). Methods: The formal caregivers of 99 dementia patients who were diagnosed by DSM-IV criteria and admitted to geriatric hospital or nursing home were interviewed by both BRSD-K and NPI-K for measuring behavioral and psychological symptoms in dementia (BPSD). Overall prevalence of BPSD, mean scores of BRSD-K and NPI-K according to the severity of dementia, correlations between BRSDK total and subscale scores and the corresponding scores of NPI-K were analyzed. Results: Above 95% of the subjects showed one or more BPSD during the last month. Severity of BPSD measured by BRSD-K and NPI-K were not statistically significant among the severity of dementia. Correlations between BRSD-K subscale score and the corresponding scores of NPI-K were statistically significant except that of psychotic subscale score of BRSD-K and delusion score of NPI-K(p<0.01). Conclusion: Results of this study showed that BRSD-K and NPI-K were not identical although both were useful to evaluate BPSD. It was also suggested that BPSD of inpatient were different from those of outpatient since it was relatively severe in mild stage.