Under the action of earthquake, curved bridge will produce torsion due to its geometric irregularity. Therefore, the pier of curved bridge will be subjected to the compression bending shear torsion coupling force, resulting in complex failure forms. In this paper, a ramp bridge is taken as the engineering background, and the concentrated hinge fiber model is used to build the finite element model of the curved bridge. This paper explores the finite element modeling method of curved bridge, and then studies the influence of different pier height and different pier layout on the seismic performance of curved bridge. The results show that the lumped hinge fiber model is more suitable for the simulation of curved bridge piers than the fiber model. At the same time, the change of pier height has a significant impact on the stress of pier, and the change law of pier stress with pier height under constant height type is not consistent with that under variable pier height type. The stress of piers with the same height is also different under different layout types.