The present invention relates to a rice ball forming device, which comprises: a support frame accounting for forming a framework; a chamber disposed at an upper side of the support frame and including an inlet for introducing materials into the chamber therethrough and an outlet for discharging the introduced materials to the outside therethrough; an opening/closing means for closing the outlet so as to prevent the material in the chamber from being discharged or for opening the outlet when the materials are discharged; a mixing means for stirring the materials introduced into the chamber; a heating means for heating the materials introduced into the chamber; a compression unit installed under the chamber so as to compress the mixed materials discharged from the chamber; and a forming unit, installed under the compression unit, for forming the compressed materials discharged from the compression unit into a predetermined shape and discharging the same downward. The rice ball forming device can add seasoning a
