Nowadays, many people are deeply interested in health and well-being. Ministry of Health and Welfare showed the results of evaluation of medical service of seventy eight general hospitals in 2005. The number of its medical service variables was eighteen and the evaluation was carried out in eight regions on a national scale. Our study used the result data of the evaluation and presented the descriptive and inferential research findings. Thus, relations between the eight regions in Korea and 18 variables were studied, using ANOVA, etc., the significant results were found, and through regression analysis we estimated slope parameters of significant variables and could let the persons concerned know which variables were more important or less important and suggested which variables should specially be strengthened for higher ranking of the overall evaluation and for acquisition of the excellent grade, A.