In order to improve the poor seismic performance of socket pier, this paper proposes a prefabricated end-reinforced socket pier on the basis of the standard socket connection method. By broadening the section width at the end of socket pier, the seismic performance of socket pier is improved. Twenty-two socket piers and cast-in-place piers were designed. The section width and its width ratio were used as parameters. Through numerical simulation of pseudo-static loading test, the seismic indexes of each model, such as hysteretic curve, skeleton curve, ductility capacity, residual displacement and energy dissipation capacity, were compared and studied. The seismic performance of the end-reinforced socket pier is better than that of the standard socket pier, even close to that of the cast-in-place pier. Finally, the linear function relationship between the optimal width ratio and the section width is given.