Patients who suffer from oral -maxillofacial bone defect are always faced with teeth lost, facial aesthetics and functional problems. It is a key point to recover fundamental function and correct the aesthetic defect earlier in such kind of patients. With the development of implantology, microsurgery and computer technology, especially the introduction of implant placement in the field of reconstruction, oral-maxillofacial bone defect has dramatically improved the potential for functional reconstruction of complex defects of the maxilla and mandible.