The utility model discloses a biogas utilization processing system, the utility model discloses this system automation degree is high, has the control by temperature change function, and the department increases the screw at the discharge gate, can be fast with waste material from a jar internal discharge. Inside fermented raw materials that this system utilized backflow structure to make the tank bottoms flows into jar body top with the zymotic fluid from the bypass outlet circulation, help the upper and lower intensive mixing of fermentation raw materials and zymotic fluid like this, the efficient carried out the intensive mixing to fermented raw materials and zymotic fluid more under the mixing effect who stirs the leaf while to it produces the efficiency of marsh gas to improve the straw. Combine PLC to accomplish the automated control to entire system simultaneously.