Purpose: The vascularized free fibula flap has become the most popular reconstruction method for segmental mandibular defect because of adequate bone graft length and acceptance of dental implants.While because of the height discrepancy between the native mandible and transplanted fibula,it is difficult to wear conventional dentures or do osseointegrated implants.The purpose of this study was to research if mandibular defect could be reconstructed with fibula flap and non-vascularized fibula bone to get a better contour and high neo-alveolar bone.