To store a large number of pallets with plates placed therein on a storage shelf.

This plate storage system comprises a plate storage building 2 with each set of pallet storage shelves 3 in two rows facing each other on a plate storage yard 1 so as to form pallet transfer passages 5 in multi-stage and multi-row between the pallet storage shelves 3, pallets 12 to be stored in the pallet storage shelves 3 with plates 15 placed on the pallets, an overhead crane 7 mounted on a rail 6 installed above the plate storage building 2 in a traveling manner along the building 2, and a pallet carrying table 9 suspended from a trolley 8 traversing on the overhead crane 6, and a pallet transfer device 13 for receiving and delivering the pallet 12 between the pallet carrying table 9 and the pallet storage shelves 3 is provided on the pallet carrying table.