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Objective : to discuss the effectivenss of the treatment of thoracolumbar burst fracture using the pedicle screw at the injured vertebral level Material and Methods : 44 patients(male 32 cases,female 12 cases, average age 44.5± 11.6 years-old) were treated at our hospital and other institution with posterior internal fixation using the pedicle screw at the injured vertebral level with DRFS.Results: the average Cobb angle were 19.1°± 14.8° in kyphosis before operation.The compressed rate were 46.3%± 17.7% in preoperation.Kyphotic deformity was corrected perfected, the average lordosis angle was 5.7°± 8° after operation, 24.7°± 13.6° of postoperative kyphosis correction, the compressed rate were recovery to 93.4%± 10.3% in postoperation.47.2%± 20.8% of postoperative correction.The anterior vertebra body height was almostly restore to normal.Conclusion: the treatment of thoracolumbar burst fracture using the pedicle screw at the injured vertebral level can achived an ideal result; the pedicle screw can reduct the fracture fragment directly;DRFS is a kind of better instrument for treatment of thoracolumbar burst fracture by pedicle screw into the fractured vertebral body.