Abstract: Based on existing research results, the fiber beam-column model for concrete filled steel tube columns considering torsion effect was used for the finite element bar-system model of curved steel-concrete composite girder bridges. The shell-solid refined model, multi-scale model, and traditional fiber beam-column model were also established for comparison. Four earthquake waves in different directions were used, and a comprehensive investigation on the analytical results was made, including self-vibration property, displacement of the top section of piers, and the torsion angle and internal force of piers. The results showed that the high modeling speed, solution efficiency and precision could be achieved when analyzing the response of curved steel-concrete composite girder bridges subjected to earthquake loads. The torsion effect in piers of curved steel-concrete composite girder bridges subjected to longitudinal earthquake loads could be evaluated efficiently.