A plate parts carrying system that is capable of sucking the plate parts to be processed automatically without having trouble with the supply of the carrying program, which makes a specified value of the sucking position easily. A carrying program 8 is transmitted from an automatic programming device 9 to a plate loader control unit 6 through a communication network 10. The carrying program 8 includes a specified value of a sucking position Q that is a stop position for sucking a plate parts M that are cut off by a plate processor 1. A sucking position change operation means 23 that changes the above specified value is provided for when suction parts 3 of a plate loader 2 cannot suck plate parts M at the specified value. The plate loader control unit 6 comprises a change output means 27 that outputs the specified value of the changed sucking position Q to the automatic programming device 9.