This paper presents a three-dimensional Finite Element Analysis (3D FEA) on reinforced concrete beams tested experimentally by other researcher for investigating the effectiveness of hybrid reinforcement (FRP bars and steel bars) as a main reinforcement to enhance the flexural behavior of concrete beams. To provide a new model which can simulate the performance of concrete beam reinforced with steel and FRP bars accurately, all of the beam components were included in the model and element which composing the model and mesh size were chosen carefully. The user-programmable features in ANSYS 13.0 were used for model analysis. The developed model showed a good agreement with the corresponding experimental result. A parametric study is carried out to investigate the influence of FRP to steel reinforcement ratio, FRP bars type, Location of FRP and steel bars and concrete strength in the behavior of hybrid FRP-RC beams.