The reinforcement effect of the high performance ferro-cement laminates (HPFL) was investigated as composite covers of precast concrete hollow slab on the integrity of precast concrete hollow slabs by three conditions under simulated earthquakes action. The results have shown that slabs and composite covers have not debonded after the destruction of the supporting wall at different locations, even two hollow slabs cantilevered at lateral. As the composite cover of precast hollow plate, HPFL can effectively improve the integrity of precast hollow floor slab, make hollow slab continuous at two vertical directions of horizontal direction, and any stiffness of the horizontal components in this plane approaches infinity, so that structural integrity and earthquake resistant performance of hollow slabs are guaranteed.