Purpose The purpose of this study was to determine effects of gait training using on treadmill with and without visual ·auditory biofeedback on walking characteristic and balance in 30 hemiplegic patients. Methods 30 patients who consented were randomized as two group. The control group and experimental group performed conventional physical therapy. In addition control group performed gait training using on treadmill with visual · auditory biofeedback and experimental group performed gait training using on treadmill without visual · auditory biofeedback. Results To find out the effect, walking characteristic by Gait Trainer 2, balance ability by BBS, FRT were three times repeatedly measured at baseline before treatment and 6 weeks after treatment. Experimental group and Control group improved more significantly after six-weeks treatment in walking speed in gait characteristic. 3After a six weeks treatment, there was no significantly difference between the two groups in gait characteristic but symmetry index(stance phase, step length) in the experimental group showed a mean difference and the positive effects higher than the control group. Control group improved more significantly after six-weeks treatment in FRT in balance ability. . After a six-week treatment, there was no significantly difference between the two groups in balance ability but BBS in the experimental group showed a mean difference and the positive effects higher than the control group. Conclusion To summarize the result of this study, it is considered that gait training using on treadmill without visual · auditory biofeedback contributes to improve walking speed and FRT, gait training using on treadmill with visual · auditory biofeedback contributes to improve walking speed.