Abstract: With gradual increase of curvature and step-by-step numerical integration method, the section moment-curvature (M-φ) relationship curve of carbon fiber sheet (CFS) confined concrete column as well as the lateral force - top displacement (P-δ) curve of CFS confined concrete column subjected to monotonic increasing lateral load are obtained. A computer program is developed to perform full-range nonlinear analysis of CFS confined concrete columns subjected to monotonic increasing lateral load. The calculated P-δ curves of 8 CFS confined concrete column specimens and 1 unconfined concrete column specimen are in good agreement with the experimental results. The influence of confinement degree of CFS and the axial load ratio on the post-yield deformation capacity of the CFS confined concrete column is investigated.