Abstract: In order to study the influence of high-strength steel bars on the seismic performance of railway gravity piers, pseudo-static tests were carried out on two pier models of HRB500 high-strength steel bars and two pier models of HRB335 common steel bars.The effects of different reinforcement ratios of high-strength steel bars on seismic performance indexes such as hysteretic curve, skeleton curve, stiffness, displacement ductility and cumulative energy dissipation were studied.The results show that the height of plastic zone of bridge pier with high strength steel bar increases, the spalling range of concrete at the bottom of pier increases, and the phenomenon of steel bar exposure is more obvious, and its failure characteristic is different from that of ordinary reinforced concrete piers.Compared with ordinary reinforced piers, the hysteretic curve of high strength steel piers with equal area reinforcement is fuller, its horizontal bearing capacity and energy dissipation capacity increase obviously, ultimate displacement and yield displacement increase, but displacement ductility decreases slightly, with the increase of reinforcement ratio, the deformation capacity of bridge piers increases.On the other hand, the residual displacement and equivalent damping coefficient of the equal strength reinforced piers are smaller, the better the self-reset performance is, the lighter the damage is in the earthquake, and the residual stiffness increases, and the ultimate angular displacement is consistent with that of the ordinary reinforced piers, which shows that the equal strength reinforced piers have a certain resistance to overturning, which is beneficial to the repair and reinforcement of the piers after the earthquake.