In order to understand the flexural properties of recycled brick coarse aggregate concrete beams deeply, based on ANSYS finite element analysis software,the paper simulated and analyzed the flexural property of recycled brick coarse aggregate concrete beams with different replacement ratios of recycled brick aggregate and different longitudinal tensile reinforcement ratio. The results show that the calculation results of finite element fit perfectly with that of test.The numerical analysis of finite element can simulate the flexural property of recycled brick coarse aggregate concrete beams effectively; the replacement ratio of recycled brick coarse aggregate and longitudinal tensile reinforcement ratio have a great influence on ultimate bending moment and ultimate deflection of mid-span; the recycled brick aggregate influence coefficient k is stable when the reinforcement ratio is in the range of 1.01% to 1.48%.