This study examined the factor structure of the Korean version of the Millon Clinical Multiaxial Inventory(MCMI) for two samples. One sample consisted of normal person, and the other sample, abnormal sample consisted largely of psychiatric patients. Raw scores for the 24 scales were used as the input variables for a principal axis factoring. Three factors with genvalues greater than one, scree test and interpretability were retained. Congruency coefficient of two samples was very high(.9856). And clinical scales included each factor were similar in two samples. The first factor seems to represent thought disorder, depression and anxiety related maladjustment. The second factor appears to reflects histronic and antisocial personality disorder related dimension. And the third seems to represent a mistrust, suspiciousness and labile affect related dimension. The limitations of this study and future directions for further study were discussed.