Based on the anisotropic hyperelastic constitutive model of plain polyester reinforced rubber composites， the strain energy is decomposed into three parts： rubber matrix strain energy， fabric fiber tensile strain energy and fabric reinforced rubber shear strain energy， and parameters of the constitutive model are determined by uniaxial tensile tests. The algorithm of ABAQUS UANISOHYPER_INV is introduced to analyze the hyperelastic behaviors， and verified by comparison with experimental data. The nonlinear anisotropic behavior of the fabric can be better characterized by the proposed macroscopic model， which is caused by the large deformation during the tensile process. We can use the anisotropic hyperelastic constitutive model to obtain an accurate prediction result simply and practically. The proposed model also provides a theoretical basis for the design of fabric reinforced rubber composites.