NOVELTY - The anaerobic digester comprises a main body including a carcass inlet port in an upper portion for injecting an animal carcass into a cylindrical storage tank, a gas discharge portion installed in the upper portion of the main body to discharge the gas generated from the animal carcass, and a leachate pipe installed in a lower part of the main body to discharge the leachate generated from the animal carcass. A metal panel is laminated on a lower end part of an upper end strip and a phase end part of a lower part strip of the storage tank.    USE - The anaerobic digester is useful: for processing animal carcass (claimed); and as a livestock excretion reservoir.    ADVANTAGE - The digester prevents an outflow of air and corruptive gas, thus preventing the environmental contamination, and enabling reusage of gas as fuel. The collected amount of the gas can be accurately measured and the gas discharge can be automatically controlled according to the measured gas volume using an unmanned automatic system. The carcass is injected into the storage tank through the carcass filter part, so that the body fluid only can be swimmingly smoothly discharged.    DETAILED DESCRIPTION - The anaerobic digester comprises a main body including a carcass inlet port in an upper portion for injecting an animal carcass into a cylindrical storage tank, a gas discharge portion installed in the upper portion of the main body to discharge the gas generated from the animal carcass, and a leachate pipe installed in a lower part of the main body to discharge the leachate generated from the animal carcass. A metal panel is laminated on a lower end part of an upper end strip and a phase end part of a lower part strip of the storage tank. The main body further includes a triangular-shaped support stand that is fixed between a lower end portion and a surface of the main body, where the main body which stores the animal carcass is sealed. The main body includes a filtering device that including a set of through-holes, where the filtering device is connected with outlets through which the leachate streams down to separate the leachate from the animal carcass. The main body comprises a set of cylindrical gas trap portions that are connected at an upper part of the main body to measure the gas generation amount. A thread having the form of parabola is arranged within the gas trap portion. A weight part is connected with a center part of a collecting board and positioned outside the gas trap portion, where the collecting board is made of fabric. A level gauge level meter measures the ascending and descending movement of the weight part. A sensor generates a sensor information according to ascending and descending movement of the weight part. A radio network controller is installed at a side of a combustion unit. A gas exhausting tube discharges the gas rising within the main body and controls the opening and closing of a valve that is installed at a side of the gas exhausting tube. A boiler device heats the water using the heat of combustion is ejected.