Abstract： Objective To observe the bone mineral density(BMD)in type 2 diabetic women and discuss the methods for evaluation of BMD.Methods BMD was measured by dual-energy X-ray absorptiometry(DEXA)at skeletal regions of supine and lateral spine,left femur neck and left hip in 484 type 2 diabetic women and 868 healthy women.The relation of BMD of healthy women in skeletal regions with age changes was found to fit a cubic regression model.Results The peak BMD of lateral spine and hip appeared at 25-34 and 35-44 years old respectively.BMD in diabetic women was not different from age-matched healthy women.The BMD values of the different age stages in diabetic women showed no difference(P>0.05)as compared with healthy women,and decreased with the age increase.The numbers of damaged bone sites were increased with the age increase.The BMD difference values between peak value and values of different age stages showed no difference between diabetic and healthy women groups(P>0.05).Conclusion The changes of BMD in type 2 diabetic women show no difference from age-matched healthy women.And in both diabetic and healthy women,BMD decreases with age increasing.