The high molecular weight polyethylene (UHMWPE) and Ti6Al4V alloy deposited by diamond like carbon film (DLC film) were chosen as the specimens.Finite element method was used to study the swing and rotation friction behavior of the artificial cervical intervertebral disc.The influences on the contact region of the friction pairs by the angle and load were obtained.The results show that the friction shear force and deformation of DLC film are increases gradually with the increasing of load and swing angular displacement.The displacement of DLC film in the direction which is parallel to swing friction direction is larger than that in the direction which is vertical to the friction.The friction fatigue is generated easily in the center of DLC film socket,thus,brittle spalling is generated in the certain region.During rotation friction,adhesive zone appears in the center of DLC film socket so that the rotation movement area is at the stickslip mixed zone.In addition,the area of the relative slip zone,contact stress and friction shear stress on the contact interface are increased with the increasing of stress and rotation angular displacement.Therefore,the brittle spalling is produced at the edge of the DLC film socket which leads to the more serious wear.