To provide a loading system at a low cost as a whole by reducing the number of bar code reader and reducing the wiring construction.

A bar code label marking information is studs to each work, and the only one bar code reader 5 is arranged in a carrying vehicle 1. When the works A-G are set in any one of work setting stations ST1-ST3, a ground control board 3 gives the carrying vehicle 1 a command to go to receive the work. The carrying vehicle 1 goes to receive the work, and reads out the bar code of the work, and carries the work to a working machine M1 or M2 as a destination on the basis of the information. After the machining, the carrying vehicle 1 reads out the bar code from the machined work, and carries the work to a delivery station ST21 or ST22.