NOVELTY - Method for performing aerobic fermentation, involves adding water in aerobic fermentation reactor, pre-treating organic waste and conveying the pre-treated organic waste in horizontal aerobic fermentation reactor, horizontally stirring the mixture, setting air vent pipe inside horizontal flange of fermentation reactor, subjecting the mixture to aerobic fermentation, performing the reaction in aerobic fermentation, stirring the fermented mixture, inoculating inoculants to the discharged feed, fermenting the mixture, and repeating the above-mentioned step at high speed.    USE - The method is useful for performing aerobic fermentation (claimed).    ADVANTAGE - The method recycles energy, requires small floor area, has minimal driving power, is environment-friendly and consumes minimal energy.    DETAILED DESCRIPTION - Method for performing aerobic fermentation, involves (a) adding water in aerobic fermentation reactor, heating the reactor and performing aerobic fermentation at high temperature, (b) pre-treating organic waste and conveying the pre-treated organic waste in horizontal aerobic fermentation reactor, (c) horizontally stirring the mixture in positive direction of rotation, horizontally stirring the mixture using fermentation reactor unit and spiral blade, conveying organic waste to the discharge side, simultaneously adding organic waste, sufficiently stirring organic waste mixed with oxygen and expanding contact area, (d) setting air vent pipe inside horizontal flange of fermentation reactor, In horizontal internal aerobic fermentation reactor exhaust gas generated by the reaction, subjecting the ventilation exhaust pipe flanges and processing the ventilated flanges, (e) subjecting the mixture to aerobic fermentation, circulating water around the system and controlling aerobic fermentation reaction at constant temperature to avoid microbial hibernation, (f) performing the reaction in aerobic fermentation, adjusting oxygen content in fermented raw materials, determining aerobic fermented ventilation and providing right amount of oxygen to aerobic fermentation reaction, (g) stirring the aerobically fermented mixture using forward-stop-reverse-stop alternating intermittent operation manner, stirring the fermented mixture using spiral blade stirrer, conveying the fermented material from the discharge port, stirring the mixture in reverse direction, feeding the fermentation material through feed port, alternating the reaction of the mixture, maintaining the thickness of the inner wall of the reactor and stirring and minimizing energy consumption, (h) discharging the fermented material, (i) feeding external feed, discharging the feed in aerobic fermentation reactor, inoculating inoculants to the discharged feed and fermenting the mixture, and (j) continuously repeating the above-mentioned step at high speed.