NOVELTY - Recycling livestock and poultry waste comprises adding water to excrement of livestock and poultry and then carrying out solid-liquid separation to obtain a solid waste and wastewater, introducing the wastewater into a biogas fermentation unit, dehydrating the fermented biogas material into slurry, introducing the solid waste and biogas residue into an enclosed composting unit, collecting methane gas in a collection tank and then introducing into a combustion furnace, introducing humus material into a rotary carbonization furnace for carbonization process and cooling carbonized product.    USE - The method is useful for recycling livestock and poultry waste to produce charcoal and concentrated liquid fertilizer (claimed).    ADVANTAGE - The method is capable of simply recycling the livestock and poultry waste with reduced energy consumption and pollutant emission.    DETAILED DESCRIPTION - Recycling livestock and poultry waste comprises adding water to excrement of livestock and poultry and then carrying out solid-liquid separation to obtain a solid waste and wastewater, introducing the wastewater into a biogas fermentation unit, collecting the fermented biogas in a collecting tank, dehydrating the fermented biogas material into slurry, introducing a part of the slurry into a backmixing unit and concentrating another part of the slurry using membrane to obtain concentrated liquid fertilizer, introducing the solid waste and biogas residue into an enclosed composting unit, collecting methane gas in a collection tank and then introducing into a combustion furnace for combustion at a temperature of 55-60 degrees C for 7-15 days to obtain humus material, drying the humus material at 200-300 degrees C and then introducing into a rotary carbonization furnace, closing the furnace and then carrying out carbonization process at a temperature of 500 plus minus 20 degrees C for 2 hours, discharging the waste gas of the carbonization furnace, and cooling the carbonized product to less than 100 degrees C to obtain charcoal.