PURPOSE: To execute an excellent polishing with a simple operation even on the body to be polished in a complicated shape and having a fine part, by making a strong magnetic material and non-magnetic material executing a random motion at high speed over the whole container internal part.

CONSTITUTION: A strong magnetic material and non-magnetic material are mixed in the container inputted with the body to be polished, and a magnetic force generation device made by arranging a magnet on the center and outer periphery of a rotating face rotatable at high speed, is faced to the bottom face of the container. Thus the strong magnetic material and non-magnetic material are subjected to random motioning at high speed over the whole container internal part and the magnetic polishing of the body to be polished is executed.