Abstract:[Objective] To investigate the effect of tranexamic acid (TXA) on perioperative blood loss of thoracolumbar fracture and dis- location. [Methods] A retrospective study was performed on 63 patients who underwent surgical treatment for thoracolumbar fracture and dislocation in our hospital from January 2013 to June 2021, including 33 patients in the TXA group and 30 patients in the non-TXA group. The perioperative and blood test data of the two groups were compared. [Results] The TXA group proved significantly superior to the nonTXA group in terms of operation time, intraoperative blood loss and drainage 24 hours after operation (P<0.05) . On the third day after oper- ation, no deep vein thrombosis was found by ultrasound in anyone of both groups. Compared with those preoperatively, the Hb, Hct and PLT significantly decreased (P<0.05) , while the PT significantly increased (P<0.05) , and APTT remained unchanged significantly 1 day postop- eratively in both groups (P>0.05) . Although there was no significant difference in the above blood test parameters between the two groups before operation (P>0.05) , the TXA group had significantly higher Hb, Hct and PLT than the non-TXA group 1 day postoperatively (P< 0.05) , whereas there was no significant difference in PT and APTT between the two groups (P>0.05) . [Conclusion] Preoperative intrave- nous tranexamic acid does effectively reduce perioperative blood loss of thoracolumbar fracture and dislocation, which is safe and reliable.