Abstract: Objective To analyze the balance function of injured lower limb by dynamic posturography. Methods Using the dynamic posturography instrument, the postural evoked responses of sixty-two normal people and two hundred and fifty-eight people with injured lower limb bones and joints were detected. The test was included sensory organization test （SOT） and adaption test （ADT）. The results of two groups were compared by t test. Results Compared with the normal people, the impaired people had significant statistical differences in balance scores of SOT3-SOT6 and proportion score of dynamic proprioception （P<0.05）. There was no obvious decrease in ADT. Conclusion The balance function of injured lower limb significantly decreases.