NOVELTY - Anaerobic reciprocating composite baffled digestion device comprises a reactor main body (1), a biogas slurry inlet pipe (4), a biogas slurry outlet pipe (5), a temperature sensor (10), a reactor main body top, two separation walls (2), two flow sensors and two liquid level sensors. The device further comprises a first reverse mixing door, a gas-liquid flowing device, a biogas slurry collector, a second reverse mixing door and a third reverse mixing door. The reactor main body is separated into three reaction pools comprising e.g. a first reaction pool via two separation walls.    USE - The device is useful for anaerobic digestion of high-concentration organic biogas slurry after large-scale biogas engineering.    ADVANTAGE - The device: does not need to dilute the slurry during the treatment process of the high-concentration slurry, thus reducing process steps; is economical; and processes the anaerobic digestion thoroughly.    DETAILED DESCRIPTION - Anaerobic reciprocating composite baffled digestion device comprises a reactor main body (1), a biogas slurry inlet pipe (4), a biogas slurry outlet pipe (5), a temperature sensor (10), a reactor main body top, two separation walls (2), two flow sensors and two liquid level sensors. The device further comprises a first reverse mixing door, a gas-liquid flowing device, a biogas slurry collector, a second reverse mixing door and a third reverse mixing door. The reactor main body is separated into three reaction pools via the two separation walls. The three reaction pools comprise a first reaction pool, a second reaction pool and a third reaction pool orderly from back to front. The first reaction pool and the second reaction pool overflow in between via the first reverse mixing door. The second reaction pool and the third reaction pool overflow in between via a second reverse mixing door. The first reverse mixing door and the second reverse mixing door are arranged in a criss-cross manner. The biogas slurry inlet pipe is installed on the side wall of the first reaction pool at the side far away from the first reverse mixing door, and interconnected with the first reaction pool. The pool wall of the first reaction pool and the pool wall of the third reaction pool are respectively installed with a liquid level sensor. The pool wall of the third reaction pool is further provided with a temperature sensor. The side wall of the third reaction pool far away from one side of the second reverse mixing door is provided with a groove opening. The gas-liquid flowing device is fixedly installed on the side wall of the third reaction pool and interconnected with the groove opening. The third reverse mixing door is arranged in the third reaction pool and divides the third reaction pool into two parts. The installation position of the third reverse mixing door is far away from the second reverse mixing door. The biogas slurry collector is placed below the gas-liquid flowing device for collecting the biogas slurry flowing down from the gas-liquid flowing device. A biogas slurry outlet pipe is placed below the reactor main body and interconnected with the biogas slurry collector. The biogas slurry outlet pipe and the biogas slurry inlet pipe are respectively installed with one flow sensor. The upper cover of the reactor main body is installed with the reactor main body top.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of the anaerobic reciprocating composite baffled digestion device.    Reactor main body (1)    Two separation walls (4) Biogas slurry inlet pipe (2)    Biogas slurry outlet pipe (5)    Temperature sensor (10)