Closed pelvic repair refers to closed reduction and external fixation, which requires general anesthesia to reset the pelvis and then fix it with an external fixation frame, and remove it after the fracture has healed. 1. Closed pelvic repair mainly refers to the use of intraoperative fluoroscopic techniques and manipulative repositioning to reposition and externally fix the fractured pelvis without surgical incision of the skin. 2. Closed pelvic repair technique is mainly performed under general anesthesia. After successful anesthesia, sterilize and spread the towel in the operation area, use C-arm fluoroscopy to locate the fracture broken end, after manipulation and repositioning, observe the repositioning situation again by fluoroscopy, if the repositioning is successful, then install the external fixation frame to fix the fracture end. 3. After the installation of the external fixation frame is completed, the final fluoroscopy again to observe the effect of the restoration and fixation, after confirming that there is no error, end the operation. 4. Closed reduction external fixation of the pelvis is generally applicable to two fractures of the pelvic ring, anterior and posterior pelvic injuries, severe pelvic deformity, and open pelvic fractures. It is necessary to choose the repair method according to the different conditions of pelvic fracture. Pelvic fracture should go to regular hospitals for standardized treatment.