In order to explore the influence of buckling-restrained brace （BRB） on the seismic performance of double-column piers， five BRB arrangements are set up between double-column piers to improve the lateral stiffness of the piers， and the seismic performance is studied in comparison with the original piers. Firstly， the pseudo-static analysis of the bridge pier is carried out to verify the correctness of the numerical simulation method by comparing with the literature test data. Secondly， the seismic performance study of the bridge pier is carried out to obtain the damage， internal force and deformation calculation results of the bridge pier through the nonlinear time history analysis of six models under different ground motions （0.2g， 0.4g， 0.8g）. After the comparative study， an optimal BRB arrangement scheme is proposed. The study shows that the BRB setting of the double-column pier can effectively improve the lateral stiffness of the pier， reducing the displacement response of the pier top under the earthquake， reduce the damage of the pier， reducing the steel yielding and the plastic hinge area of the pier， and significantly reducing the bottom bending moment of the pier， but different BRB settings sometimes lead to an increase in the bottom shear force of the pier.