The purpose of this study was to investigate the effect of badminton exercise on bone mineral density in the teenagers. A total of thirty regular and healthy male ranging from 16 to 18 years old was tested, which includes 15 served as badminton group and the other as the experiment group. In order to explore the influences of badminton exercise to the BMD value of upper and lower limbs in the teenager, the BMD values in the parts of two forearm bone (including parts of medium-to-distal 1/3 radius shaft, medium-to-distal 1/3 ulna shaft and distal radius shaft) and accustomed use near femur (including parts of femoral neck, trochanter and Ward's triangle regions) were accessed for the test. The group for comparison is the male students of junior high school similar to badminton experimental group in age, body height and body weight respectively. Subjects with hereditary disease, mediation histories, daily diet and behavior malfunctions that might affect evaluation of BMD for the experimental and comparative groups were excluded. The independent t-test was applied. According to the results, it was shown the affections of badminton to the BMD value in the places of the upper limb were obvious (p＜.05); whereas, effects to femoral neck and trochanter in the lower limb were positively significant.