NOVELTY - An organic refuse processing apparatus comprises a top portion with an insertion opening surrounded by front and rear surface walls, and a floor plate (15A) inserted between the front and rear surface walls. DETAILED DESCRIPTION - The organic refuse processing apparatus is equipped with a heater which maintains a predetermined temperature to the organic refuse supplied to a reaction vessel and stirred by a stirrer (22). The reaction vessel has support legs (16,161) attached in four corners to its main portion. The front and rear surface walls (11,12) are equipped with a portion of the surface (11A,12A). The sides (11B,12B) are folded at right angles and continuous to the ends of the surfaces (11A,12A). The front and rear surface walls and sides are integrally connected through a reinforcement. A horizontal rib which contacts the position corresponding to the upper end edge of floor plate is formed. The projection portion (18,18') opposite to the base periphery of the floor is formed on the front and rear surface walls by the internal circumference enclosure. An exhaust outlet is formed on the front surface or rear surface walls. The elimination plate (19) provided at lower portion of the exhaust outlet open and close the lower portion of the exhaust outlet.    USE -   Useful for processing organic refuse.    ADVANTAGE -   The front surface and rear surface individually constitute the main portion of the reaction vessel, hence the number of portions is reduced and cost is low. The rib prevents the leakage of water from the upper end edge of the floor plate. Fouling near the installation place of the main portion of the apparatus is eliminated since the emission plate is provided to the exhaust outlet. DESCRIPTION OF DRAWING(S) - The figure shows the section of internal composition of the organic refuse processing apparatus. (11,12) Surface walls; (11A,12A) Surface; (11B,12B) Sides; (15A) Floor plate; (16,161) Support legs; (18,18') Projection portion; (19) Elimination plate; (22) Stirrer.