NOVELTY - Compost (18) is manufactured by pressure application kneading of compost raw material in advance and reverse direction using two fold structured force feed screw (7). Temperature of the raw material is increased by applying pressure and raw material is allowed to pile for 1 minute at more than 70degreesC to kill harmful microorganism. It is cooled, treated with air, ground, microorganism is added and fermented.    USE - For manufacturing compost from raw materials such as livestock excrement, mixture of organic matter containing waste material (1a) or cellulose containing organic substance (1b) of human waste treatment sludge and daily life waste water sludge. The compost is used as fertilizer.    ADVANTAGE - The method controls environmental pollution and simultaneously natural resources are reused effectively.    DETAILED DESCRIPTION - Compost is manufactured by pressure application kneading of compost raw material in advance direction and reverse direction along the side elimination gate of treatment tank, using two fold structured force feed screw. The temperature of raw material, circulating inside the treatment tank (4) is increased by applying pressure. The raw material is allowed to pile for 1 minute, at more than 70degreesC to kill the harmful microorganism on the surface of raw material. It is cooled, treated with air and ground. Microorganism is added and fermented.    An INDEPENDENT CLAIM is also included for the pressure application kneading apparatus (8). The apparatus comprises injection part for injecting compost raw material, force feeding screw for pressure application kneading of injected raw material axially to the treatment tank. The treatment tank has an elimination gate (9') on the other side. A two fold structured force feeding screw, fixed to the common rotation axis (10). The advance screw vane (11) supplies pressure to exhaust outlet side and reverse screw vane (12) supplies injection hopper (5) side, from an exhaust outlet (9).    DESCRIPTION OF DRAWING(S) - The figure shows the entire block diagram of compost manufacturing apparatus.    Organic substance containing waste material (1a)    Cellulose containing organic substance (1b)    Pressure application and kneading treatment tank (4)    Injection hopper (5)    Force feeding screw (7)    Pressure application and kneading apparatus (8)    Exhaust outlet (9)    Elimination gate (9')    Rotation axis (10)    Advance screw vane (11)    Reversing screw vane (12)    Compost (18)