Objective:To evaluation of the treatment of unfavourable mandibular angle fracture by internal fixation with two different approachs.Methods:46 patients with unfavourable mandibular angle fracture were treated by internal fixation with titanium miniplate through transoral approach group(n =20)and extraoral approach group(n =26)respectively.Postoperative clinical and radiological data including wound healing,difficulty in function and malocclusion were analysed 1 0 days,3 months and 6 months after operation. Results:Postoperative infection occurred in 2 cases in extraoral group,and 1 of them developed as ostomylitis which recovered gradu-ally in 1 year.Surgical site infection was observed in 2 cases in transoral approach group,which was resolved with appropriate course of antibiotics and wound care.Conclusion:Unfavourable mandibular angle fracture can be effectively treated by titanium miniplate via intraoral or extraoral approach.