Introduction: Pelvic fracture in polytrauma patients remains an actual problem of modern traumatology. Materials and methods: This study represents a prospective analysis of the examination and treatment results of 235 polytrauma patients with pelvis fractures. The injuries severity was calculated using AIS and ISS scales. It was presented the specifics of diagnostics and treatment of patients with polytrauma. The patients were divided in 3 groups according to M.Tile classification of pelvic fractures: type A – 96, type B – 60, type C – 79. The particularities of diagnostic and management of pelvioabdominal trauma were presented. The indications for stabilizing, early and delayed osteosynthesis were made more precise. Stabilizing osteosynthesis was carried out in 45 patients at admission to the hospital and during the first 48 hours after trauma. Early osteosynthesis was done in 157 cases during 3-14 days after trauma. Delayed osteosynthesis was performed in 26 cases after 3 weeks. Results: It was established that patient hemodynamics was stabilized after pelvis osteosynthesis by external fixation device: the volume of transfusion decreased on 1,2±0,2 liter per day (p<0,05) (average for one patient), blood preparations - 0,68±0,2 liter per day (p<0,05). It was observed a levelling of bone union formation terms after the pelvic ring stabilization in pelvis fractures type A, B, C, achievement of necessary fragments correction and creation of stable fixation. Conclusions: The elaborated methods of pelvis injuries surgical treatment using the device for external fixation, management of the polytrauma patients have provided the positive results that permits us to recommend the proposed treatment system for wide use in practical traumatology.