There is provided a prize management system of a game machine in which a plurality of kinds of prizes (3, 5, . . . ) are accommodated in a case (1), a player operates from the outside of the case to select and catch his/her favorite prize, and the selected prize is discharged to a taking-out port, comprising a non-contact detection section (41) provided with each one of the prizes for specifying a kind of each prize, chute sections (25) and (27) for passing the prize in a path leading to the taking-out port of the prizes, reading sections (29, 31) for reading with non-contact the detection section of the prizes passing through the chute section. The prizes are managed on the basis of a result read by the reading section.