To solve a problem in which when performing rice milling, there are a case in which it becomes impossible to use a bag due to forgetting bringing in a bag to receive white rice, that a hole opens in the brought in bag, breakage or the like, and a case in which the number of a bag runs short.

A coin-operated rice polishing machine in which unpolished rice to be rice milled of a prescribed amount is supplied to an unpolished rice hopper 1, and a rice milling charge according to the amount of the unpolished rice is supplied into a coin mechanism 2 to perform rice milling, is characterized in that a bag taking-out device H is prepared in which a bag taking-out switch 3 is operated after supplying the predetermined rice milling charge, and thereby the device takes out one sheet from a bag housing case 5 which beforehand prepares a bag 4 for holding white rice after rice milling.