After local plastic flow, the atomic-scale structure and concomitant mechanical property evolution are investigated for a ribbon-shaped Fe78Si9B13 metallic glass. By serving abrasive papers as a medium to transport the pressure, the equivalent pressure on the ribbon surface is sufficiently magnified. Multiple shear bands pervading along their surface generate simultaneously after deformation. We revealed a densification process triggered by the cooperative atomic rearrangements in the short and medium-range by analyzing the synchrotron diffraction patterns in reciprocal and real spaces. Meanwhile, the local plastic flow enhances the structural heterogeneity. In contrast to the strain-softening under uniaxial loading, these structural changes contribute to improved resistance to subsequent deformation. As a result, the Vickers hardness of the deformed Fe78Si9B13 metallic glass increases compared to the undeformed sample, manifesting a local strain-hardening behavior.