Objective To investigate the effects of the pedicle screw fixation combined with pedicle bone graft in treatment of thoracolumbar burst fracture(TLBF). Methods Selected 28 patients with TLBF treated in our hospital from July, 2013 to July, 2016, all of whom were treated with the pedicle screw fixation combined with pedicle screw fixation in the treatment of vertebral pedicle screw fixation. Recorded all patients' detailed situations on preoperative period of bleeding volume, operation time and length of stays. Compared 28 patients' imaging parameters, back pain visual analogue scale (VAS) score and Frankel classification before and after operation. And to observe the complications during follow-up as well. Results Compared with the pre-operation, 28 patients' anterior and posterior margin height, Cobb angle and VAS score were significantly better (P<0.01) than that of one month and three months after the operation. According to the Ridit analysis, six months after the operation, 28 patients' Frankel classification was better than that of pre-operation (P<0.01). No internal fixation loosening or breakage was found during the follow-up period of 6 months, and there was no nerve symptoms caused by pedicle screw fixation. Conclusion The pedicle screw fixation combined with pedicle screw fixation in treatment of thoracolumbar burst fracture(TLBF) can effectively restore and maintain the biomechanical stability of the spine, correct kyphosis, reduce postoperative pain and complications, improve nerve function and be safe and reliable,have higher clinical value.