NOVELTY - The reaction device comprises a fermentation tank, an air system (2), an air return system (3) and a sealing system. The sealing system is arranged on a fermentation groove (1). The air system comprises an air blower and an air supply pipe. The air return system comprises a return-air pipe and a waste gas discharging pipe. The air supply pipe is connected with the fermentation tank. One end of the air supply pipe is connected with the blower. Other end of the air return pipe is connected to the fermentation groove.    USE - The reaction device is useful for the aerobic fermentation of solid organic waste.    ADVANTAGE - The reaction device is capable of rapidly fermenting solid organic waste with high heat utilization rate and good odor sealed environment effect.    DETAILED DESCRIPTION - The reaction device comprises a fermentation tank, an air system (2), an air return system (3) and a sealing system. The sealing system is arranged on a fermentation groove (1). The air system comprises an air blower and an air supply pipe. The air return system comprises a return-air pipe and a waste gas discharging pipe. The air supply pipe is connected with the fermentation tank. One end of the air supply pipe is connected with the blower. Other end of the air return pipe is connected to the fermentation groove and the blower and the waste gas discharge pipe. The air return pipe and a fan and the waste gas discharge pipe are provided with a valve between the air pipe and blower (21). A sealed membrane system comprises a sealed film (4) and a sealing device. The sealed film is covered on the notch of the fermentation tank. The sealing device is fixed on the fermentation tank, and further comprises a condensate discharge system. The condensate liquid discharging system comprises a guide plate and a condensed liquid collecting groove. The guide plate is arranged below the guide plate at the tail end of the sealing device and the condensate liquid collecting groove. The sealing device is used for flushing rubber pipe. The air return system further comprises a dehumidifier. The dehumidifier is arranged on the air return pipe and the connecting section of the blower. The fan comprises air return air inlet and fresh air inlet. The air return air inlet is connected to the air return pipe. The fresh air inlet is provided with a valve, and is connected with the outside of the fan. A bottom of the fermentation tank is provided with several gas distribution grooves. A bottom of the fermentation tank is provided with a water discharging groove.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of a reaction device for aerobic fermentation of solid organic waste.    Fermentation groove (1)    Air system (2)    Air return system (3)    Sealed film (4)    Blower. (21)