Abstract: The FRP-confined steel-reinforced high-performance fibre-reinforced cementitious composites (HPFRCC) circular column is a novel composite component used for lateral force resistance. In order to accurately simulate the cross-sectional compression-bending performance of composite columns and analyze the mechanism, a numerical model is established using the Fiber Element Method (FEM) to simulate the moment-curvature relationship of FRP-confined (unconfined) steel-reinforced HPFRCC circular columns. This model takes into account the tensile strain hardening constitutive model for HPFRCC, as well as the compressive strengthening constitutive model for HPFRCC confined by FRP under eccentric compression. Moreover, this study investigates the influence of several parameters, including the ultimate tensile strain, the cracking (ultimate) tensile strength, the axial compression strength of HPFRCC, and the axial compression load on the compression-bending performance of FRP-confined (unconfined) steel-reinforced HPFRCC columns. The study also evaluates the tensile contribution of HPFRCC.