The paper researched the RC Beam-Column-Joint strengthened with CFRP based on ANSYS. Firstly, the author established two models to simulate and compare the results. Secondly, the author compared the simulating results with the test results and proved the accuracy of the simulation results. Finally, the differences are analyzed. The results show that the reaserch on RC Beam-Column-Joint strengthened simulation based on ANSYS is practicable, and the result can be widely used in actual design.