NOVELTY - One-way flow promoting feedstock marsh gas fermentation system comprises a feedstock pipe, a discharging pipe, a fermentation pipe, and hydraulic pressure level room, where the fermentation pipe is a straight pipe, and is connected with a feedstock pipe and discharge tube at two end side. The hydraulic pressure level room is mounted above with fermentation pipe. The hydraulic pressure level room is connected with horizontal feed tube drain pipe. The water pressure discharge tube is connected with a horizontal discharging pipe and drain pipe.    USE - Used as one-way flow promoting feedstock marsh gas fermentation system.    ADVANTAGE - The system promotes uniform distribution of strain, promotes the fermentation of raw material, and increase the marsh gas production.    DETAILED DESCRIPTION - One-way flow promoting feedstock marsh gas fermentation system comprises a feedstock pipe, a discharging pipe, a fermentation pipe, and hydraulic pressure level room, where the fermentation pipe is a straight pipe, and is connected with a feedstock pipe and discharge tube at two end side. The hydraulic pressure level room is mounted above with fermentation pipe. The hydraulic pressure level room is connected with horizontal feed tube drain pipe. The water pressure discharge tube is connected with a horizontal discharging pipe and drain pipe. The fermentation pipe and feedstock pipe is provided with discharging pipe blocking plate. The fermentation pipe and discharge pipe is provided with feedstock tube blocking plate, and the space between adjacent blocking plate forms a cell, part of each of a cell is connected with a gas-guide pipe set with a valve. The feedstock tube discharging water pipe is set with a water pressure and marsh liquid one-way flow feedstock tube and one-way valve. The feedstock pipe and water drain pipe is connected at lowest position of water pressure. The feedstock tube is connected with a water pressure pipe and is connected with a discharging pipe of water pressure pipe.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of the one-way flow promoting feedstock marsh gas fermentation system.