Abstract: Objective To explore the efficacy of surgical methods for internal fixation of multiple rib fractures with sternum fracture caused flail chest.Methods Totally sixteen cases of multiple rib fractures with sternum fracture caused flail chest fixation operated by internal fixation with embracing fixator were enrolled.Results After fixation,pain was significantly reduced in 16 patients; chest wall stabilization and early recovery of respiratory function were recorded.Conclusion Ni-Ti shape memory alloy devices fixation for the treatment of multiple rib fractures with sternum fracture caused flail chest is not very traumatic with a short operative time,reliable fixation and a high clinical value.