To provide a carriage storing device capable of properly and accurately regulating the going in and out of an ornamental board.

A carriage storing device 20 stores a plurality of carriages 10 under a stage 100. The device 20 is provided with a going-backward stopping piece 21 for regulating the stored carriage 10 at the front row from going backward and a stopper 22 for positioning the carriage 10. The position of the carriage 10 is regulated by both going-backward stopping piece 21 and stopper 22, so that an ornamental board 11 additionally provided to the carriage 10 at the front row is positioned at a storing port 100a of the stage 100. A rail 23, which supports an auxiliary wheel 15 provided coaxially with wheels 12, 13 of the carriage 10, is installed in the vicinity of the storing port 100a of the stage 100, while the going-backward stopping piece 21 and the stopper 22 are arranged both in front and in rear of this rail 23.