NOVELTY - Excrement processing system includes breeding house (1), breeding device (3), barn (42), defecation ditch (6), excrement outlet pipe (35), impurity precipitation system, solid-liquid separation system, digester system, biogas insulation system, biogas slurry reflux system, biogas purification system, reservoir, stirring device, transport belt, pre-processing tank, storage tank, water inlet, water outlet, biogas slurry spraying pipe, liquid shower nozzle, liquid spray pipe, film type biogas pool liner, heat preservation system, heating coil, heat circulation pipe, and heat circulation pump.    USE - Excrement processing system used for aquaculture industry (claimed) for producing organic fertilizer.    ADVANTAGE - The system is environment-friendly and has small floor space area and high resource utilization rate.    DETAILED DESCRIPTION - Excrement processing system comprises breeding house (1), breeding device (3), barn (42), defecation ditch (6), excrement outlet pipe (35), impurity precipitation system, solid-liquid separation system, digester system, biogas insulation system, biogas slurry reflux system, biogas purification system, reservoir, stirring device, transport belt, pre-processing tank, storage tank, water inlet, water outlet, biogas slurry spraying pipe, liquid shower nozzle, liquid spray pipe, film type biogas pool liner, heat preservation system, heating coil, heat circulation pipe, heat circulation pump, excrement channel, recycling pipe valve, biogas reflux pipe, decarburization tower, desulfurizing tower, retaining plate, gas pipe, methane storage purification tank, gas guide pipe, inner container, concrete pool body, water collecting tank, aminoacetic acid and potassium hydroxide mixed tank, baffle plate, sieve plate, gas coal furnace, and gas pressure table.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of excrement processing system.    Breeding house (1)    Breeding device (3)    Defecation ditch (6)    Excrement outlet pipe (35)    Barn (42)