Abstract: In this contribution, numerical modeling was performed to interpret the effects of gradient microstructure on the tensile behaviors of Ti₄₆Zr₂₀V₁₂Cu₅Be₁₇ metallic glass(MG). The free volume theory was incorporated into the ABAQUS code as a user material subroutine UMAT, which was used to depict the shear banding evolution in the MG matrix. Particles and initial free volume were assumed to be distributed in form of various gradient functions, and the resulting material models were loaded under uniaxial tension. The results show that the tensile plasticity of MG matrix composites containing groove shape gradient distribution of particle is best, and appear necking deformation during plastic deformation; For the initial free volume containing the convex gradient distribution, MG plastic is improved well; When the free volume gradient distribution span is changed, the smaller gradient span in MG, the more obvious plastic is increased; And as for particles, the number of plies on both sides is more, the main shear zone through in the sample is not easy to appear during plastic deformation.