NOVELTY - Movable cutting stirring device comprises a biogas fermentation system and a pneumatic stirring device. The biogas fermentation system comprises a gas storage plate and a gas baffle plate. The gas storage plate divides biogas fermentation area whose top part is set with pneumatic stirring device. The pneumatic stirring device comprises a pneumatic piston and a storage plate set with a pneumatic piston phase matched sleeve. The pneumatic piston is set along vertical direction of a sliding sleeve. The upper end of pneumatic piston is fixed to a connecting rod of a weight balancing block.    USE - Used as a movable cutting stirring device.    DETAILED DESCRIPTION - Movable cutting stirring device comprises a biogas fermentation system and a pneumatic stirring device. The biogas fermentation system comprises a gas storage plate and a gas baffle plate. The gas storage plate divides biogas fermentation area whose top part is set with pneumatic stirring device. The pneumatic stirring device comprises a pneumatic piston and a storage plate which is set with a pneumatic piston phase matched sleeve. The pneumatic piston is set along the vertical direction of a sliding sleeve. The upper end of the pneumatic piston is connected to a connecting rod of a weight balancing block. The pneumatic piston is movably located adjacent to a first pump of a first block and a second block. The stirring device is used for drawing the materials. The first block comprises a first chute and a first stirring blade. The first pump of first block is provided with first chute set along the longitudinal direction to first pump and first block. The terminal wall of first block is set with many first stirring blades. The second block comprises a second chute and a second stirring blade. The second pump of second block is provided with second chute set along the longitudinal direction to second pump and second block. The terminal wall of second block is set with many second stirring blades.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of the movable cutting stirring device.