A degradable bearing pallet and a preparation method thereof. The pallet has an upper cover, a packing middle layer and a lower cover; a plurality of pallet support legs are disposed at the bottom of the lower cover; the lower cover is integrally molded with the plurality of pallet support legs; and the packing middle layer is filled in the lower cover and in the plurality of pallet support legs; the upper cover covers the packing middle layer and the lower cover. The middle part of the bottom of each of the pallet support legs is formed with a sunken groove; the pallet support legs in each of the rows are mutually connected through a connecting board; and each of the connecting boards is clamped in a corresponding one of the sunken grooves.