NOVELTY - The apparatus has upper and bottom fermenters (1,2) to which the compost raw material (3) is transferred in order. The raw material transferred from the fermenter (1) is ground in the grinding transfer apparatus (4) which moves horizontally relative to the bottom fermenter (2).    USE - The apparatus is used to manufacture compost by fermentation maturation of putrefactive organic waste e.g. organic refuse, sludge and foodstuffs residue.    ADVANTAGE - The compost is efficiently manufactured in a limited space.    DETAILED DESCRIPTION - The compost manufacturing apparatus has upper and bottom fermenters (1,2) to which compost raw material is transferred orderly. The compost is obtained by advancing the fermentation process in each fermenter. Grinding transfer apparatus (4) is provided between fermenters which grinds and transfers compost raw material from the upper to the bottom fermenter. The grinding transfer apparatus and the bottom fermenter are moved horizontally relative with each other. The information on the compost formation of the fermenter is detected and the compost monitoring apparatus relatively positions the fermenters. The raw material is porousized and the process is controlled so that porousization is not done on the raw material unless it is necessary. The information detector detects the moisture content of the raw material and the water sprayer is operated based on the detection. A working space is provided for the movement of the grinding transfer apparatus. The accumulated compost raw material in the shape of a mountain is perpendicularly sliced from the edge of the conveyor (13) so that the material fall into the grinding apparatus. The fermentation state is adjusted by a fermentation adjustment device which supplies air intermittently. An accommodation tank (12) temporarily receives the compost and has an outlet (15) at the edge for transferring. The lower wall of the fermenter is made into an opening-closing structure which has an opening for compost transfer. The discharge apparatus classifies the compost ejected from the fermenter of the lowest layer for every fermenter and ejects.    DESCRIPTION OF DRAWING(S) - The figure shows a block diagram of the compost manufacturing apparatus.    Fermenter (1,2)    Compost raw material (3)    Grinding transfer apparatus (4)    Accommodation tank (12)    Conveyor (13)    Outlet (15)