Objective To investigate the effeet of Kang-cheng tiegao on bone fracture healing. Methods Animal fracture model was established and treated by Kang-cheng tiegao. Besides, The support touchdown time and X-ray photograph grading was investigated, alkaline phosphatase ( ALP) , serum phosphor and serum calcium were also analyzed. Results Kang-cheng tigao could significantly shorten the touchdown time, increas both fracture healing and callus fromation, ALP were significantly higher after administration. However, the serum phosphate and serum calcium levels were little changed. Conclusions The result suggested that Kang-cheng tiegao is effective in promoting fracture healing.