NOVELTY - A straw anaerobic and aerobic integrated fermentation method involves utilizing a marsh gas tank. 55 kg straw is crushed and mixed with ammonium hydrogen carbonate. The mixture is placed into the aerobic fermenting tank through a feeding opening of a marsh gas tank main body, and biogas slurry is sprayed into the tank. Aerobic fermentation process is carried out on the straw in the aerobic fermenting tank. The fermented straws are placed into the marsh gas tank body, and layer of screen is arranged on the tank body. Anaerobic fermentation is performed above the screen layer.    USE - Method for integrated fermentation of anaerobic and aerobic of straw.    ADVANTAGE - The method enables fermenting the straw in a simple, convenient and cost-effective manner.    DETAILED DESCRIPTION - A straw anaerobic and aerobic integrated fermentation method involves utilizing a marsh gas tank comprises marsh gas tank main body (1) that is provided with a gas storage tank (5) and a discharging port (3). A marsh gas pipe (4) is connected with the gas storage tank and provided with a net plate (2). The marsh gas tank main body is connected with a first aerobic fermenting tank (8) that is provided with a feeding port (7). A reflux device (6) is connected with a nozzle of a second aerobic fermentation tank (10). 55 kg straw is crushed and mixed with 0.2% ammonium hydrogen carbonate. The mixture is placed into the aerobic fermenting tank through a feeding opening of the marsh gas tank main body and biogas slurry is sprayed into the tank. Aerobic fermentation process is carried out on the straw in the aerobic fermenting tank for 7 days. The fermented straws are placed into the marsh gas tank body and layer of screen is arranged on the tank body. Anaerobic fermentation is performed above the screen layer, where weight ratio of the straw and biogas slurry is 1:1.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a marsh gas tank.    Marsh gas tank main body (1)    Net plate (2)    Discharging port (3)    Marsh gas pipe (4)    Reflux device (6)    Feeding port (7)    First aerobic fermenting tank (8)    Second aerobic fermenting tank (10)