NOVELTY - A pig manure fermentation machine comprises a sealed fermentation tank having a tank body comprising an inner wall, a heat-isolating layer and an outer wall. A perpendicular bisector of the fermentation tank is fixed with a cavity on a rotating shaft via a bearing. A lower air blower is connected with the cavity on the rotating shaft. An upper sub-layer of the rotating shaft is fixed with a stirring vane distributed with air vents. Bottom part of the rotating shaft is fixed with a single-way ratchet. The fermentation tank comprises a feed port at top part and a discharge port at bottom part.    USE - Pig manure fermentation machine used in producing organic fertilizer.    ADVANTAGE - The fermentation machine takes small area and has high automation degree and simple operation. After the pig manure is put in the machine, there is no need to adjust the moisture and add other auxiliary materials to produce high quality organic fertilizer. Further, the machine can avoid problems on high costs of plant construction, long distance transportation and intensive process; obtains deodorization rate of 99%; and works normally below 30 degrees C.    DETAILED DESCRIPTION - A pig manure fermentation machine comprises a sealed fermentation tank having a tank body comprising an inner wall, a heat-isolating layer and an outer wall. A perpendicular bisector of the fermentation tank is fixed with a cavity on a rotating shaft via a bearing. A lower air blower is connected with the cavity on the rotating shaft. An upper sub-layer of the rotating shaft is fixed with a stirring vane that is a cavity body. The stirring vane is distributed with air vents. The cavity on the rotating shaft is connected with upper cavity on the stirring vane. The bottom part of the rotating shaft outside the lower bottom part of the fermentation tank is fixed with a single-way ratchet having a power arm with two ends and a pawl which are hinged with an oil pressure cylinder. The fermentation tank comprises a feed port at top part and a discharge port at bottom part. An orbit type hopper lifting frame is arranged at corresponding position of the feed port. The hopper lifting frame comprises a hopper lifting cart.