In this paper, a 2D constitutive model of concrete and steel for nonlinear analysis of reinforced concrete shear wall is established. The compressive, tensile mechanical behavior of concrete are described respectively. Bearing capacity and deformation of reinforced concrete shear wall under cyclic loading can be analyzed accurately. To verify the applicability of the model, the nonlinear mechanical behavior of the single shear walls under cyclic loading is calculated, the results shows that the model can effectively describe hysteretic characteristics of reinforced concrete shear wall, correctness and effectiveness of this model are verified initially.