The influence of volume fraction on tungsten fiber/ Zr-based bulk metallic glass matrix composites was studied. The results show that the composites is fractured by shearing when the volume fraction is less than 50%; compressive strength and plastic deformation increase with the increase of volume fraction; when the volume fraction is more than 50%, the composites is fractured by bending and splitting, compressive strength increases continuously, but plastic deformation decreases with the increase of the volume fraction. The analysis indicates that mechanieal properties change with volume fraction of tungsten fiber affected by the form of shear bands.