To efficiently purify abrasives while labor required for feed and discharge water piping can be minimized.

An abrasive cleaning system is provided in a machine room 4 separately from ball, grinding and lifting machines 10a-10c provided in game machine installation islands 1a-1c and the islands 1a-1c and comprises a cleaning machine 70 for cleaning and drying abrasives, a device 30 for sending abrasives separated at the machines 10a-10c, a returning device 50 for returning abrasives cleaned and dried by the machine 70 to the machines 10a-10c, and a controller for controlling actions of the cleaning machine 70, device 30, and returning device 50. The device 30 and returning device 50 are disposed across the machines 10a-10c above the machines 1a-1c.