NOVELTY - The method involves pre-heating animal excrement to temperature of 50-60 degrees C, placing total mass of reaction vessel into 1-3% calcium oxide, stirring and heating reaction vessel with stirring speed of 120-160 r/min, heating material inside reactor to 70-80 degrees C, washing solution with saturated solution of bleach, controlling solution temperature at 55-60 degrees C, emitting material by cooling through gas-liquid separator together with separated liquid entering solid-liquid separator for solid-liquid separation and performing anaerobic fermentation for resulting solid and liquid.    USE - Method for treating heavy metal residue stability for harmless poultry and livestock excretion (claimed).    ADVANTAGE - The method enables high efficiency, fast, industrial, environmental protection processing livestock, poultry excretion object and the residual heavy metal. The full process is mechanical and full-sealing. The spread of germs and heavy metal pollution can be reduced. The comprehensive utilization of livestock excrement economic and social benefits can be improved.    DETAILED DESCRIPTION - Method for treating heavy metal residue stability for harmless poultry and livestock excretion, involves pre-heating animal excrement to a temperature of 50-60 degrees C after feeding a kettle, placing total mass of the reaction vessel into 1-3% calcium oxide, stirring and heating reaction vessel continuously with stirring speed of 120-160 rpm, heating material inside the reactor to 70-80 degrees C, stirring and maintaining the temperature 70-80 degrees C for 1 hour constantly, setting stirring speed is 200-240 rpm, injecting total mass of 0.3-2% of saturated solution of sodium sulfide into the reactor, controlling solution temperature at 50-55 degrees C, boosting autoclave to 1.3-5 atmospheres pressure, heating autoclave to 180 degrees C, maintaining the temperature for 1 hour, maintaining the batch holding period of pH 6.5 -8.5, setting stirring speed of 200-240 rpm and reduced to atmospheric pressure, discharging the materials, generating pressure steam and the smell of gas in the process after cooling, separating gas-liquid into primary separation, washing solution with a saturated solution of bleach, controlling solution temperature at 55-60 degrees C, emitting material by cooling through the gas-liquid separator together with the separated liquid entering the solid-liquid separator for solid-liquid separation and performing anaerobic fermentation for resulting solid and liquid.