NOVELTY - Livestock excrement is treated by building up a fermenting bed; matting a layer of straw to facilitate ventilation and oxygen supply from the base; mixing livestock excrement and auxiliary materials including straw, rice straw, or sawdust; adding zymogen powder into leavening and mixing the excrement, auxiliary materials and zymogen powder until uniform; fermenting by piling the leavening; overturning the pile with a machine or manually every 7 days, where temperature reaches over 50 degrees C and at maximum of 70 degrees C during 24-36 hours of fermentation to obtain organic fertilizer within 15-20 days.    USE - Method of treating livestock excrement (claimed).    ADVANTAGE - The method has simple and convenient operation, low cost, and good fermenting effect; is safe; protects urban and rural ecological environment; and eliminates harmful bacteria and insect pests from the excrement. Further, the energy consumption and the fetor emission are reduced, the processing time is shortened, and nutrient loss is reduced.    DETAILED DESCRIPTION - Treatment of livestock excrement comprises:    (A) building up a fermenting bed with a width of 1.5 m and a length of 2 m in a ventilating place which is exposed to the sun, and having bricks 0.2 m above the ground;    (B) matting a layer of straw with a thickness of 2-3 cm to facilitate ventilation and oxygen supply from the base;    (C) mixing livestock excrement containing 70% of water and auxiliary materials containing less than 12% of water including straw, rice straw, or sawdust, at weight ratio of 3:1;    (D) adding zymogen powder into leavening and mixing the excrement, auxiliary materials and zymogen powder until uniform, where 1 g zymogen powder is added per 10 kg of excrement;    (E) controlling water content in the stirred leavening to 50-65% such that it can be conglobated when gripped by hand and scattered when the hand loosens;    (F) keeping the material loose when packaging;    (G) covering the material on top of it with straw and rice straw to preserve the moisture and prevent from being overwet in hot area or on rainy day;    (H) fermenting by piling the leavening at a height of not less than 1 m and no more than 2 m, and width of 1.5 m, where total volume of fermenting pile is not less than 1.5 m3;    (I) overturning the pile with a machine or manually every 7 days, where temperature reaches over 50 degrees C and at maximum of 70 degrees C during 24-36 hours of fermentation to obtain organic fertilizer within 15-20 days.