The purpose of this study was to investigate the effect of regular exercise on bone mineral density (BMD) and muscle strength in female undergraduate students. The subjects were 34 female undergraduate students, who were divided to 17 in exercise group and 17 in non exercise group . BMD was measured by Dual Energy X-ray Absorptiometry(DEXA) at the lumbar(L1-4) and remuf(femora neck, trochanteric region, Ward\' triangle). the results from t-test of each variable were as follows. The BMD of the exercise group were significantly higher than that of controls in the lumbar(L3-4), femoral neck, trochanter, and Ward\' triangle. The muscle strength of the exercise group were significantly higher than that of controls in the grip strength and sit ups . Body composition were not significant between exercise group and control group. In this result, regular exercise was suitable exercise for increasing bone mineral density and muscle strength in female undergraduate students.