The utility model discloses a high -efficient stirring formula methane -generating pit that plant used, including methane -generating pit body, the stirring body and drive assembly, the stirring body is including lifter and lifter plate, the lifter is vertical to be set up in the center of methane -generating pit body, the lifter plate is fixed in the lifter lower extreme, link up about being equipped with on the lifter plate a plurality of flow through the hole and with flow through the apron that the hole one -to -one set up, the apron articulates in the top surface of lifter plate through the hinge, the suit has and is used for making the apron press at the torsional spring that flows past the hole upper end for the apron provides elasticity on the hinge, the utility model discloses a high -efficient stirring formula methane -generating pit that plant used fluctuates through the lifter plate and can realize carrying out even, abundant stirring to the feed liquid, does benefit to brokenly the shell and guarantees the methane -generating pit gas production.