Objective To establish the 3D geometric model with a better fit for human acetabular joint surface. Methods Acetabulum 3D point data was acquired by the 3D laser surface scanner. Two kinds of parameterized 3D model, a spherical model and a rotating elliptical model, were built by means of a spherical surface and a rotating elliptical surface approaching to the acetabulum bone joint surface, respectively. The parameters of two models as well as fitting errors were statisticly analyzed. Results The fitting error of the rotating elliptical model was significantly less than that of the spherical model (P<0.001). The semi major and semi minor axis of ellipsoid model was positively correlated with the radius of sphere model. Conclusion The rotating elliptical model had a better fit for human acetabular bone joint surface than the spherical model.