PURPOSE: To aim at automation, by taking a simple substance out of a package of the specified parallel assorted, housing it in an empty package, whereby forming a new pallet, and constituting it so as to be delivered to a forwarding station, in case of an assorter for product loading pallets.

CONSTITUTION: A pallet 3 is assorted at a pallet assorting part 5, and a pallet 3-1 is delivered to a storage yard part 8 by a transfer line 10, while the specified pallet 3-2 is fed to a simple substance dividing part 6. And, a simple substance 2 is taken out of the pallet 3-2, fed to a high-speed assorter 17 of a simple substance assorting line 7, and assorted therein, while it is combined with simple substances 2A and 2B supplied likewise, housed in an empty package 4, and loaded on a new pallet 3-3, thus it is fed to the storage yard part 8 from a transfer passage 18. The storage yard part 8 selectively feeds a forwarding part with these pallets 3-1 and 3-2. With this constitution, simple substance assortment is made into automation.