NOVELTY - Method for generating power, involves blending smashed straw cellulose with suspension of power generating bacteria and microorganism nutrient solution, introducing the blended mixture into anode chamber through anode feed inlet, adding working liquid into cathode chamber, introducing suspension of air generating bacteria into cathode through inoculation opening of the cathode chamber, incubating the components for 24 hours at 37 degrees C, connecting the cathode and anode board with the loads through lead, and generating power.    USE - The method is useful for degrading straw cellulose e.g. crop straw or any solid fiber waste and generating power (claimed) e.g. hydrogen and methane used as fuel or industrial raw material, and for producing roughage feed.    ADVANTAGE - The method enables cost effective generation of power. The secondary environmental pollution is prevented. The device for generating power is simple in structure and easy for operation, and has excellent applicability.    DETAILED DESCRIPTION - Method for generating power by degrading straw cellulose using microorganism, involves blending smashed straw cellulose uniformly with suspension of power generating bacteria and microorganism nutrient solution, introducing the blended mixture intermittently or continuously into anode chamber through anode feed inlet, adding working liquid into cathode chamber, introducing suspension of air generating bacteria into cathode through inoculation opening of the cathode chamber, incubating the components for 24 hours at 37 degrees C, connecting the cathode and anode board with the loads through lead, and generating power. The power generating bacteria in the anode and air generating bacteria in the cathode are isolated from gastric juice in the rumen of ruminant animals. An INDEPENDENT CLAIM is included for a device for generating power, which comprises vacuum sealing ring, metal anode board, diaphragm, first cathode chamber, metal cathode board, second cathode chamber and air output hole. The diaphragm is natural bio-membrane embedded between the first and second cathode chambers. The metal anode board and metal cathode board are connected with the load through conductor.