To provide a floating barrel device capable of preventing attachment of a polishing article on an internal wall of a container and uniformly carrying out polishing of the polishing article with no nonuniformity.

The floating barrel device 11 to polish the polishing article by colliding and rubbing the polishing article and a polishing medium against each other by rotating the polishing article, the polishing medium and liquid input to the inside of the container 25 in one direction around a central axis 26 of the container 25 is provided with a liquid flow control jig 41 to direct a part of a revolving flow around the central axis 26 of the liquid in which the polishing article and the polishing medium are included toward the inside in the radial direction of the revolving flow by putting it on a blade 49.