Objective To investigate the high digital method of three- dimensional finite element model of the lower cervical spine with titanium mesh cage and plate after anterior cervical corpectomy by spiral CT,so as to provide standar d model for biomechanical experiment for anterior cervical corpectomy. Methods The lower cervical spine(C4-C7) geometries were determined from CT images of a 23 year old healthy man. The finite element model was constructed by the combination of software Mimics 9.1 and Freeform.The meshed model was acquired and finished with Ansys 9.0.With the pretreatment function of finite element software Ansys ,the structure of lamina terminalis,intervertebraldiscs,nucleuspulposus,anteriorlongitudinalligaments,sup-raspinal ligament were established supplementarily based on the osseous structure of spinal model. Based on the intact finite element model(FE/Intact), the model were generated by simulating anterior cervical titanium mesh fusion cage and plate after C5 corpectomy .Proper material features and entity unit type were used for intellectual finite element mesh division .Results Finite element mesh division of three- dimensional model of the lower cervical spine with titanium mesh cage and plate after anterior cervical corpectomy: Three- dimensional reconstructed software Mimics and finite software Ansys were used successfully to perform finite element mesh division of three- dimensional model of the lower cervical spine with titanium mesh cage and plate after anterior cervical corpectomy.Conclusions The constructed three- dimensional finite element model of the lower cervical spine with titanium mesh cage and plate after anterior cervical corpectomy approaches to real biomechanical sample,which can simulate the natural condition and facililate the further biomechanical research.