NOVELTY - Bio-organic fertilizer comprises 50-60 wt.% paper-making sludge, 20-30 wt.% sugarcane leaves, 6-10 wt.% poultry and livestock hair, 5-8 wt.% epidesmine, 5.5-7 wt.% phosphate ore, 0.5-0.7 wt.% bioactive bacterial agent, 0.1-0.15 wt.% nitric acid rare earth, 0.2-0.5 wt.% fulvic acid, 0.05-0.08 wt.% compound sodium nitrophenolate, and 0.3-0.5 wt.% composite trace elements.    USE - The bio-organic fertilizer is useful for inhibiting bacteria, resisting diseases and regulating the growth of the crops.    ADVANTAGE - The bio-organic fertilizer: combines organic materials and inorganic materials; utilizes nutrients having high compatibility, which can be easily absorbed by crops.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the bio-organic fertilizer, comprising (a) drying the sugarcane leaves under sun until moisture content is not greater than 10%, then cutting into 1-2 cm long and short segments, (b) selecting phosphorus ore industrial waste material, which is low-grade phosphorus and contains phosphorus pentoxide content of not less than 17%, crushing into fine powder, taking epidesmine as natural ore, and mechanically crushing into fine powder, (c) drying the poultry and livestock hair under sun, and mechanically crushing into powder, (d) taking pulp and paper-making sludge having water content of 75-80%, then mixing with the sugarcane leaves obtained in the step (a), then controlling the water content of the mixture to 55-60%, adding the poultry and livestock hair powder obtained in the step (b), phosphorus ore powder, prepared epidesmine powder and biological active microbial inoculum, and mixing uniformly, (e) taking the resulting product and stacking into bottom wide of 1.5-2 m and height of 1 meter, under forced ventilating condition, carrying out aerobic compost process in static condition, subjecting to high-temperature fermentation at more than 60 degrees C, depending upon the number of stack turning, monitoring the stack temperature, controlling temperature to not greater than 70 degrees C, beyond temperature condition, completely and uniformly turning, where the fermentation time is 28-30 days, (f) adding nitric acid rare earth, fulvic acid, compound sodium nitrophenolate and composite trace elements to the resulting fermentation product, uniformly mixing, discharging, and naturally drying in open-air to obtain the finished product, i.e., paper-making sludge compost, and (g) drying the finished product paper-making sludge compost, sieving, granulating, and packaging.