NOVELTY - Tower-type fermentation system comprises primary fermentation system (10) and secondary fermentation system (40). The primary fermentation system is mounted higher than the secondary fermentation system, and both fermentation systems are connected by aqueduct (22). Primary fermentation system includes primary fermentation pipeline, which is present outside barrel (12). The primary fermentation pipeline is provided with inlet, and outlet at bottom. The primary fermentation pipeline is separated by partitions, and present in cylinder, which is divided into levels.    USE - Tower-type fermentation system.    ADVANTAGE - The tower-type fermentation system is ultra-efficient, and promotes effective stirring and uniform distribution of biogas slurry, and improves efficiency within the system.    DETAILED DESCRIPTION - Tower-type fermentation system comprises primary fermentation system and secondary fermentation system. The primary fermentation system is mounted higher than the secondary fermentation system, and both fermentation systems are connected by aqueduct. Primary fermentation system includes primary fermentation pipeline, which is present outside barrel. The primary fermentation pipeline is provided with inlet, and outlet at bottom. The primary fermentation pipeline is separated by partitions, and present in cylinder, which is divided into levels. The side wall of the cylinder extends out of the barrel to the level, which is below the surface of the primary fermentation pipeline. The primary fermentation pipeline from inside is provided with multiple air resisting plates. The adjacent side wall of the cylinder has gas panel board. The secondary fermentation system includes secondary fermentation pipeline, feeding pipe (42) and discharging pipe (44). The feeding pipe and discharging pipe are connected to feed slurry pipe. The side walls of the feeding pipe and discharging pipe are present at bottom of the secondary fermentation pipeline. The secondary fermentation pipeline from inside is provided with multiple air resistance plates located in feeding pipe and discharging pipe.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the tower-type fermentation system.    Primary fermentation system (10)    Barrel (12)    Aqueduct (22)    Secondary fermentation system (40)    Feeding pipe (42)    Discharging pipe (44)