NOVELTY - Extracting biogas slurry using pneumatic diaphragm pump comprises e.g. regulating control valve initial state, regulating axis of left and right protrusions raised portions respectively blocking third and fourth air holes, allowing gas storage plate inner product of the biogas fermentation system to convey into pump body intake passage through an air duct, allowing to enter into gas removal tank having bottom pores, respectively conveying into regulation axis intake area and center valve of intake groove, and controlling third and fourth ventilation hole protrusion blockage.    USE - The method is useful for extracting biogas slurry using pneumatic diaphragm pump (claimed).    DETAILED DESCRIPTION - Extracting biogas slurry using pneumatic diaphragm pump comprises regulating control valve initial state, regulating axis of left and right protrusions raised portions respectively blocking third air hole and fourth air holes, allowing gas storage plate inner product of the biogas fermentation system to convey into pump body intake passage through an air duct, allowing to enter into gas removal tank having bottom pores, respectively conveying into regulation axis intake area and center valve of intake groove, controlling third and fourth ventilation hole protrusion blockage, where both ends of the center cavity form a closed space, the center cavity cannot be moved, regulating and control shaft does not complete in a balance of a force, promoting the regulation of axial movement on one side at atmospheric pressure, regulating and controlling shaft to move to left side under a function of air pressure, regulating and controlling shaft left discharge in gas cell set with a first air hole for regulating and controlling shaft left end for discharging, regulating and controlling shaft right discharge cell connected to a pump discharge passage, regulating and controlling shaft right exhaust area volume enlargement, regulating and controlling shaft and air inlet area and the third air hole connection, exhaust area and right air hole connection, allowing air to flow into the air intake slot, eventually into the right chamber, which gradually increases the volume of the right gas chamber, stretching and deforming right diaphragm at central axis for left diaphragm shrinkage, where the gas of the left gas chamber is conveyed into the left gas removal tank, main chamber, allowing exhaust gas of the left gas groove to enter into exhaust passage, to achieve left chamber exhaust gas and right intake process gas chamber, allowing air gas source to flow into groove by air inlet slot, flowing into a final air chamber, causing gas chamber enlargement, shrink deformation, right chamber diaphragm piece stretch deformation and interaction function through the center axis, entering into discharge channel, pushing shaft regulation and control right shift by shrink deformation, connecting third and the fourth air holes, regulating and controlling the third air hole and shaft left area, regulating and controlling shaft, allowing the fourth air hole to enter into a right chamber, which gradually increases gas, pushing the valve core to the center gas left, discharging via the first air hole to a discharge in the center to left moving process of the valve core through the third chamber, connecting the air inlet groove and air slot from right and left air groove, allowing to enter groove, and air via right air groove, connecting the main chamber, discharge slot and right discharge channel, left air chamber air inlet, stretching deformation, right diaphragm chip shrink deformation, so, regulation and control of left right swing, inflation and discharge process, stretching deformation by interaction function of center axis after right diaphragm piece shrink deformation, which causes decrease in the left liquid, and increase in right liquid volume, retaining ball of the following function, left liquid in the liquid discharging process, absorbing right liquid cavity, stretching deformation of the right diaphragm piece by interaction of center axis, shrink deformation of membrane piece, discharging right liquid and absorption of left liquid.