Objective Using CrySegmentation software developed by Institute of Life Quality & Mechanical Engineering to distill the boundary of human bone from Cryo-cadaver,using reverse engineering software Imageware to establish the surface model of lumbar,and then using ANSYS to establish 3D finite element model.Methods Using the first male cryosection data from The Third Military Medical University for Cryosection image processing,and then for the contour line of section information processing.Results 3D finite element model of lumbar with all anatomical characteristic could be established quickly in this way.Conclusion Using CrySegmentation developed by Institute of Life Quality & Mechanical Engineering and some commercial software can precisely and quickly establish surface model,solid model & 3D finite element model of human lumbar to supply the original model based-on anatomy for the purpose of digital simulation and dynamical simulation in the different domain such as aviation,vehicle,shipping,biomedicine engineering,etc.