Abstract: To improve the theoretical analysis and numerical simulation methods for evaluating the mechanical behavior of self-centering reinforced concrete (RC) beam-column joints incorporating steel angles as energy dissipators, six cyclic loading tests were conducted on full-scale specimens of a novel self-centering beam-column joint. Based on the test results, three force states of the self-centering beam-column joint were developed, and corresponding bearing capacity calculations were carried out for each state. A new analytical method was proposed to evaluate the mechanical behavior of self-centering beam-column joints, accounting for the effects of beam stiffness degradation. The results show that the method proposed can accurately predict the bearing capacity of the joint, combined force of prestressed steel strands in beams, the ratio of rotational deformation to the total deformation, the beam-end uplift, and the load-bearing contribution of steel angles under varying drift levels. Based on the experimental investigation and theoretical analysis, a simplified finite element modeling method was developed for this type of joint, which can accurately simulate its load-displacement hysteresis performance.