Abstract: Objective: To establish the model of mandibular distraction osteogenesis in rabbits.Methods: Thirty white New Zealand rabbits underwent osteotomy in the right mandible.The bone stumps were repositioned and fixed with self-devised distraction equipment.After 7 days' latency period,the distraction was carried out,and the specimens were performed histology examination.Results: All the rabbits survived and were in good condition within the experiment period.The right mandible of all the rabbits was lengthened 3 mm successfully.Conclusions: Self-devised distraction equipment may be used for animal experiment,and rabbits can be established as an experimental model for study of distraction osteogenesis.