NOVELTY - Processing organic waste comprises maintaining oxygen concentration in oxygen insufficient atmosphere inside a raw material conveyance route of an inner cylinder (5), to 3% or less. The temperature of raw material supplied into the route, is raised to 700 degrees C, and maintained for predetermined time to form carbonized material. A water vapor supply pipe (19), supplies water vapor to remove carbonized material.    USE - For processing organic waste e.g. livestock waste such as droppings of hen, wood type waste such as bark, to manufacture fuel, fertilizer, soil improvement material, deodorizing material, adsorption material.    ADVANTAGE - The organic waste is easily and reliably processed, to produce carbonized material, ash compound, active substance. The generation of harmful dioxin is prevented.    DETAILED DESCRIPTION - Processing organic waste comprises maintaining oxygen concentration in oxygen insufficient atmosphere inside a raw material conveyance route of an inner cylinder (5), to 3% or less. The temperature of raw material supplied into the route, is raised to 700 degrees C, and maintained for predetermined time to form carbonized material. A water vapor supply pipe (19), supplies water vapor to remove carbonized material. The activation substance or ash compound or carbonized material is removed by increasing holding time of raw material temperature or supply amount of the water vapor. The treated substance is ejected through an ejection hood (20) arranged at one end of the inner cylinder. The inner cylinder is rotatably arranged within the outer cylinder (1), such that the ends of the inner cylinder are protruded from the outer cylinder. The ends of the inner cylinder are respectively attached with the insertion hood (17) and ejection hood. The raw material supply unit (18) is connected to the insertion hood attached with the water vapor supply pipe. A gas exhaust port (21) is formed in the ejection hood.    DESCRIPTION OF DRAWING(S) - The figure shows a sectional view of the organic waste processing apparatus.    outer cylinder (1)    inner cylinder (5)    insertion hood (17)    raw material supply unit (18)    water vapor supply pipe (19)    ejection hood (20)    gas exhaust port (21)