NOVELTY - High-temperature fermentation is carried out with respect to target material (A) obtained by adding and mixing a preset amount of an additive with a preset amount of organic waste material of high water content, in low-oxygen condition for preset time. The additive consists of cut paper or paper-made pellets of dehydrated paper-manufacture sludge.    USE - Fermentation of organic waste material e.g. organic sludge having high water content, livestock dung, etc, for use as fertilizer.    ADVANTAGE - The method increases the efficiency of high-temperature fermentation. Since moisture content of fermented product is low, post-processing e.g. drying process is eased. The stirring process loosens the aggregated fermented material. Control of mixing amount of additive, fermentation duration, and the amount of air supply/exhaustion can be suitably defined according to the property of process target.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for fermentation processing apparatus consisting of fermentation chamber (1) provided with an open-close lid (11), fermentation chamber (II) provided with a stirring transport mechanism (4) and a discharge port (31), down chamber (1), a discharge chamber (3) provided through the transport mechanism (5) down chamber (II), a supply structure (6) facingly provided with respect to the lid for supplying target material to chamber (1), and an exhaust mechanism (8) for exhausting from the inside of air supply mechanism (7) which supplies air to the chambers, which are made into a proper sealed structure.    DESCRIPTION OF DRAWING(S) - The drawing shows an explanatory view of the fermentation processing apparatus.    Fermentation chamber (1)    Discharge chamber (3)    Stirring transport mechanism (4)    Transport mechanism (5)    Supply structure (6)    Air supply mechanism (7)    Exhaustion mechanism (8)    Liquid fertilizer manufacture mechanism (9)    Open-close lid (11)    Discharge port (31)    Inlet (91)    Dew condensation chamber (92)    Pool portion (93)    Low-temperature portion (95)    Target material (A)    Fermented materials (B,C)    Completely fermented material (D)    Water vapor (E)