To　explore　the　mechanical　property　of　intact　long　bone　through　three-point　bending　test　of　rabbit　tibia　according　to　mechanics　of　materials.Ten　pairs　of　normal　rabbits　tibia　were　treated　on　three-point　bending　test　with　80　mm　supporting　distance　in　order　to　corroborate　the　virtual　loading　test　on　bone　model.Bending　stiffness　and　strength　of　10　pairs　of　normal　rabbit　tibia　were　obtained.　The　maximum　flexibility　of　the　right　and　the　left　tibia　was　(2.737　+/-　0.262)　mm　and　(2.739　+/-　0.233)　mm　respectively.　The　maximum　load,　which　indicated　the　bending　strength,　of　the　right　and　the　left　tibia　was　(17.803　+/-　2.675)　kg　and　(18.366　+/-　2.653)　kg　respectively.　The　area　under　the　load-flexibility　curve　before　fail　of　the　right　and　the　left　tibia　was　(23.829　+/-　4.413)　kg/mm　and　(24.725　+/-　4.101)　kg　x　mm　respectively.　The　slope　of　the　load-flexibility　curve　which　indicate　the　stiffness　of　the　right　and　the　left　tibia　was　(7.545　+/-　1.310)　kg/mm　and　(7.631　+/-　1.174)　kg　x　mm　respectively.The　discrepancy　between　different　animal　body　is　larger　than　conventionally　required.　It＇s　suggested　for　performing　three-point　bending　test　of　long　bone　of　the　body　both　sides　in　pair.