Abstract: Objective To study the method and therapeutic efficacy of the combined iliac screw with pedicle screw system internal fixation and one-stage anterior interbody autograft with iliac crest bone after focal cleaning in lumbosacral tuberculosis. Methods We summarized our 12 cases with lumbosacral tuberculosis treated using iliac screw combined with pedicle screw system internal fixation and one-stage anterior focus elimination plus iliac crest bone grafting during 3 years. Results All the incisions were healed by first intention. All patients can off-bed activity wearing lower back protector two weeks after operation and above eight months after operation,the follow up X-ray film showed all bone-grafts obtained solid fusion. Conclusion It was a safe and reliable method to treat lumbosacral tu-berculosis by using ilisc screw combined with pedicle screw system internal fixation and one-stage anterior focus elimi-nation plus iliac crest bone grafting.