NOVELTY - The unite marsh gas generating device comprises residential buildings, bathroom, LED lamps (3), a toilet, excrement discharge pipes (5), a first room (6), an organic garbage discharging pipe (7), methane tanks (8), marsh gas bacteria adding tubes, a first methane conveying pipe, methane storage tanks, a second methane conveying pipe, a methane electric generator, a station, a power distribution room, a conductive wire, a hose, and a slag outlet. The methane generator is composed of residential building garbage and waste biogas combined power generating device.    USE - The unite marsh gas generating device is useful for garbage and excrement from buildings.    ADVANTAGE - The unite marsh gas generating device is environmental friendly, economical and efficient.    DETAILED DESCRIPTION - The unite marsh gas generating device comprises residential buildings, bathroom, LED lamps (3), a toilet, excrement discharge pipes (5), a first room (6), an organic garbage discharging pipe (7), methane tanks (8), marsh gas bacteria adding tubes, a first methane conveying pipe, methane storage tanks, a second methane conveying pipe, a methane electric generator, a station, a power distribution room, a conductive wire, a hose, and a slag outlet. The methane generator is composed of residential building garbage and waste biogas combined power generating device. Each floor of the toilet is set with a pedestal. The excrement discharge pipe extends to a lower end of the marsh gas tank and is connected to the organic garbage discharging pipe. The organic garbage discharging pipe extends to a lower end of the marsh gas tank. The marsh gas tank is provided with the side face of the slag outlet. The methane tank is installed on a top of the high efficiency methane bacteria adding tubes and the marsh gas conveying pipe. The methane tank is connected with the reservoir bag of the marsh gas tank through the marsh gas conveying pipe. The biogas storage tank is connected with the marsh gas generator through the marsh gas conveying pipe. The marsh gas generator is connected with the station through the conductive wire and the junction. The power distribution room is connected with the LED lamps through the conductive wire. The volume of tank marsh gas pool of the marsh gas tank and a biogas pool are 20-5000 cubic meter.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of a unite marsh gas generating device.    LED lamp (3)    Excrement discharge pipe (5)    First room (6)    Garbage discharging pipe (7)    Methane tank. (8)