NOVELTY - Multifunctional methane tank comprises flushing system, methane generating system and heating shower, where the methane generating system comprises methane tank (1), feed inlet (2) arranged on the side, gas collecting opening (3) arranged on the upper part and connected with gas collecting tube (4) and gas tank (11) by an exhaust pump (5), valve (12) arranged between the exhaust pump and gas tank for controlling, and valve is connected with the gas tank, and pressure gauge (10) mounted on the gas tank.    USE - Multifunctional methane tank.    ADVANTAGE - The multifunctional methane tank has scientific design, reasonable structure and strong practical applicability, saves amount of water sources, reduces waste emissions and protects environment, and is suitable for using in broad rural areas in temperate zone and sub-humid zone.    DETAILED DESCRIPTION - Multifunctional methane tank comprises flushing system, methane generating system and heating shower, where the methane generating system comprises methane tank (1), feed inlet (2) arranged on the side, gas collecting opening (3) arranged on the upper part and connected with gas collecting tube (4) and gas tank (11) by an exhaust pump (5), valve (12) arranged between the exhaust pump and gas tank for controlling, and valve is connected with the gas tank, and pressure gauge (10) mounted on the gas tank. The flushing system is located above the methane tank, and flushing water tank (9) is arranged on the top. The flushing tube is connected with urinal (15). The urinal is connected with the methane tank by guide tube (14).    DESCRIPTION OF DRAWING(S) - The drawing shows perspective view of multifunctional methane tank.    Methane tank (1)    Feed inlet (2)    Gas collecting opening (3)    Gas collecting tube (4)    Exhaust pump (5)    Heating box (6)    Spray head (7)    Heater (8)    Flushing water tank (9)    Pressure gauge (10)    Gas tank (11)    Valve (12)    Floor drain (13)    Guide tube (14)    Urinal (15)