NOVELTY - Horizontal aerobic fermentation reactor comprises horizontal cylinder (12) set with stirring device. The stirring device is: provided with rotary shaft (16), spiral blade (14), where spiral blade and rotating shaft is coaxially and fixedly connected together; or provided with rotary shaft, where rotary shaft is set with two ends of rotating shaft, the two substituent rotating shaft, spiral blade, and rotating shaft, two ends of spiral blade are fixedly connected together.    USE - Horizontal aerobic fermentation reactor.    ADVANTAGE - The reactor has small floor area, low driving power, environment-friendly, and energy-saving.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for aerobic fermentation reaction method comprising:    (A) introducing external horizontal hot water into aerobic fermentation outer jacket, heating horizontal aerobic fermentation reactor, raising temperature to set temperature suitable for high speed aerobic fermentation;    (B) sending through conveying device proper amount of pre-treated organic waste and aerobic strain into horizontal aerobic fermentation reactor;    (C) feeding while starting stirring device of reactor, using stirring device helical blade and shoveling plate, conveying organic waste to discharging side, at the same time, take-dropping organic waste, stirring organic waste, and mixing with oxygen, expanding fermentation raw material contact area with oxygen;    (D) entering inner side of horizontal fermentation reactor from pipe flange, generating aerobic reaction waste gas through other end of first pipe flange, concentrating to deodorization device;    (E) during aerobic fermentation reaction, using circulating water system connected with reactor jacket, controlling aerobic fermentation reaction at constant temperature condition, avoiding eukaryotic microbes culture to enter into dormancy state at high temperatures;    (F) carrying out aerobic fermentation reaction according to temperature and oxygen content in fermentation raw material, determining ventilating time, wind amount of fermentation reactor, providing proper amount of oxygen for aerobic fermentation reaction;    (G) carrying out aerobic fermentation, where stirring device adopts positive rotation-stop-reverse-stop alternating intermittent operation mode, using spiral blade of stirring device, sending fermentation raw material to discharge port side of stirring device, when using positive and negative alternating operation, sending fermentation raw material to feeding port, fully stirring new and old fermentation raw material, lowering stirring energy consumption;    (H) sending fermentation product to next working procedure when aerobic reaction is finished using external conveying device;    (I) starting external feeding conveying device after discharging, feeding proper amount of fermenting raw material into fermentation reactor, leaving yeast fermentation material, inoculating, and feeding new raw material and carrying out fermentation; and    (J) repeating biological fermenting and degrading organic waste high speed cycle steps.    DESCRIPTION OF DRAWING(S) - The drawing shows a front view of horizontal aerobic fermentation reactor.    Horizontal cylinder (12)    Spiral blade (14)    Rotating shaft (16)