Carbon fiber cloth has many advantages, such as corrosion resistance, simple and rapid construction, and has been widely used in civil engineering. ANSYS software is used to simulate the bending of unreinforced beams and 5 CFRP beams, and the corresponding load deflection curves are given. Compared with the experimental results, the established finite element model can simulate the mechanical properties of CFRP beams well, and the nonlinear finite element simulation results are in good agreement with the experimental results.