The invention relates to a recoverable reinforced foaming sheet packing material and a preparation method thereof. The preparation method comprises the following steps that (1) an upper foaming boardand a lower foaming board are prepared with a foaming process; (2) the upper foaming board is arranged between an upper insulation roller and a high-
voltage discharging rod, the lower foaming board isarranged between a lower insulation roller and the high-
voltage discharging rod, the lower surface, heated and molten through
corona discharging, of the upper foaming board and the corresponding upper surface of the lower foaming board synchronously pass through a
corona heating area and are pressed and combined by a composite roll, thus a heat
permeation layer is formed between the lower surfaceof the upper foaming board and the upper surface of the lower foaming board, the heat
permeation layer connects the upper foaming board with the lower foaming board, and thus the upper foaming boardand the lower foaming board become a composite whole; and (3) BOPP / PE / PET
plastic film layers / a BOPP / PE / PET
plastic film layer are / is attached to the upper surface of the upper foaming board and / or the lower surface of the lower foaming board with PUR glue through
UV curing technology. After
corona treatment is combined with pressing combination by the composite roll, the lower surface of the upper foaming board and the corresponding upper surface of the lower foaming board permeate each other to form the heat
permeation layer, overall strength can be improved, strength can be enhanced by about 50%, and
toughness can also be improved.