PURPOSE: To provide a polishing device which can certainly and effectively polish a work evenly to its every corner.

CONSTITUTION: On a frame 1 a polishing chamber 2 is horizontally installed swingably, and on the chamber inner surface in the switching direction, a number of projections 5 are densely provided in dislocations alternately. When the polishing work is performed, the projections serve as so-called baffle plates so that the polish A is fluidified in random turbulences, and a work B can be polished evenly to its every corner certainly.