To provide a method for manufacturing rings that can efficiently manufacture, with high yield ratio, rings with a design that strongly evokes a concept of creating (manufacturing) the rings out of the same thing.

A method for manufacturing rings includes steps of: forming two slits that are longitudinally extended in a square bar member; expanding openings of the slits by inserting a chisel in the slits; forming two rings by putting a mandrel into the openings, and hitting with a metal hammer so that the openings become larger; and cutting off a bonded part after rotating the two ring parts with the central focus on the bonded part thereof.