NOVELTY - Multifunctional stirring device of marsh gas pool comprises an un-plasticized polyvinyl chloride (UPVC) pipe, and rib board as main material, and a book binding material, choosing phi 75-110 mm linear pipe as working cylinder. The pool is provided with multi-pipes (5-8 pipes) and three-way pipe having varying diameter of three-way pipe and multi-branched pipe each having same size pores. The multi-branched pipe has small pores (10-14 mm) which are evenly distributed in the pool, where each multi-branched pipe pores area does not exceed the diameter of multi-branched pipe.    USE - The multifunctional stirring device of marsh gas pool is useful in household biogas manual regulator (claimed).    ADVANTAGE - The marsh gas pool utilizes book binding device material having high performance, easy installation property, and can be replaced; has improved agitation; feeds gas under good pumping and supplying effect, so as to prevent anti-clogging of biogas, and high air tightness property, and hydraulic press which directly acts on pool so as to prevent production of bad odor, and carries out easy stirring process, is economical, and provides balanced gas supply in a short period of time (all claimed).    DETAILED DESCRIPTION - Multifunctional stirring device of marsh gas pool comprises an un-plasticized polyvinyl chloride (UPVC) pipe, and rib board as main material, and a book binding material, choosing phi 75-110 mm linear pipe as working cylinder. The pool is provided with multi-pipes (5-8 pipes) and three-way pipe having varying diameter of three-way pipe and multi-branched pipe each having same size pores. The multi-branched pipe has small pores (10-14 mm) which are evenly distributed in the pool, where each multi-branched pipe pores area does not exceed the diameter of multi-branched pipe so as to allow uniform distribution of liquid material pool by applying external pressure under sufficient momentum and suction, and pulling the piston for mixing.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of the multifunctional stirring device of marsh gas pool.