In patients with hemorrhagic shock due to unstable pelvic fractures, the emergency application of an external pelvic fixator has positive implications. Early application of external pelvic fixator fixation in such patients has been reported to significantly reduce the amount of blood transfusion and rehydration required to correct shock. The chief physician retrospectively analyzed the clinical data of two groups of patients with hemorrhagic shock in pelvic fractures and found that early application of the pelvic external fixator used an average of 723 ml/person less allogeneic blood and an average of 2016 ml/person less other fluid input than those who did not apply it early. For unstable pelvic fractures, external fixator can be used as a temporary fixation to effectively stabilize the fracture, reduce the patient’s pain during lifting and turning, prevent the fracture from re-dislocating, and facilitate the treatment and care of the patient’s other injuries, as well as a final fixation for pelvic fractures, which has good results for most unstable pelvic fractures. It can be performed under local anesthesia in the emergency room by a skilled surgeon based on the patient’s X-ray, without special equipment, and has the advantages of simple, rapid operation, minimal trauma, and few complications.