To automatically control delivery by an empty can loading pallet carrying crane without the intervention of an operator by automatically searching kinds of cans of pallets housed with respective shelves of an empty can warehouse by kind data determined at production starting time.

When a production start is set by a production line management computer 12, kind No. of production order No.1 and the production expected number are transmitted to a material warehouse management computer 6 from a production schedule file of a hard disk 15. The material warehouse management computer 6 is searches corresponding can kind No. from an each can kind master file of the hard disk 10, and searches housing shelf No. from an each shelf stock can kind file, and transmits them to a programmable controller 3 for an empty can loading pallet carrying crane. The programmable controller 3 for an empty can loading pallet carrying crane transmits a crane carrying signal 4 to an empty can loading pallet carrying crane 1c, and the empty can loading pallet carrying crane 1c delivers an empty can loading pallet carrying pallet.