Abstract: The present invention discloses a method for manufacturing a naturally-degraded disposabtle dish comprising: a first step for stirring 17.4 wt % of rice straw power, 4.3 wt % of rice bran powder, 61 wt % of coating agent and 17.3 wt % of corn starch to be uniformly mixed; a second step for forming a dish by compressing the mixture; and a third step for sterilizing the dish with an ozone gas. Also, the present invention discloses an apparatus for manufacturing a naturally-degraded disposable dish comprising: an upper mold having a die where electric heating lines are filled; a lower mold having a space unit for receiving the upper mold and a die where electric heating lines are filled; a controller for adjusting a temperature of the upper/lower molds by controlling electric power transmitted to the electric heating lines; and a transfer means for automatically extracting a formation object from the upper/lower molds, and automatically stacking the formation object.