In this paper, the OpenSees finite element calculation program is used to simulate the concrete segments, joints and prestressed tendons of bridge piers by selecting nonlinear fiber beam-column elements with appropriate material constitutive model. It provides a theoretical basis for numerical analysis of the seismic performance of prestressed concrete segmental bridge piers. First of all, the constitutive model of the pier material, the simulation method of each component, fiber mesh division and boundary condition setting are introduced. Then, the model analysis was carried out and it was found that the P-Δ effect and the concrete strength degradation in the core area of the pier bottom are the main reasons for the reduction of the bearing capacity of the bridge pier under the action of reciprocating loads. In addition, a good agreement between the calculated results and the pseudo-static tests was demonstrated, indicating that the characteristics of the test hysteresis curve and skeleton curve are well simulated.Finally, the influence of prestressing force, longitudinal reinforcement ratio, concrete strength, and stirrup reinforcement ratio on the pier skeleton curve were discussed by using the model. The results showed that the tensile force has the most obvious influence on the maximum bearing capacity of the specimen compared with other parameters. Concrete The influence of strength on the ductility of the specimen is the most obvious.