Abstract: In order to characterize the anisotropic mechanical behaviors of woven fabric composites precisely, based on fiber reinforced composite continuum medium mechanics theory, an anisotropic hyperelastic constitutive model with biaxial tension coupling of fiber for woven fabric composites was proposed firstly. The unit-volume strain energy in the model was decomposed into the deformation energy of fiber elongation, the compaction deformation energy due to biaxial tension coupling and shear deformation energy due to the change of angels between fibers. Then, determination approach for model parameters was given, and parameters of constitutive model were obtained by fitting the uni-axial tensile, biaxial tensile and picture-frame shear experiment data. Finally, the numerical simulation of biaxial tensile and picture-frame shear experiments was conducted by the model, and the simulation results were contrasted and analyzed with experiment data. The results show that the constitutive model proposed is suitable to characterize the non-linear and anisotropic mechanical behaviors cased by large deformation of woven fabric composites during forming process. The conclusions obtained show that the proposed constitutive model has advantages of simple and useful, and the determination of material parameters is easy, which can lay down the theoretical foundation for the numerical simulation and processing optimization for the forming of woven fabric composites.