NOVELTY - Method for preparing bioorganic fertilizer, involves testing the organic microorganism content in agricultural organic waste raw material, mixing the raw material and microorganism, performing enzymolysis, supplying carbon and nitrogen, drying, granulating, adding yeast, nitrogen-fixing bacteria and cellulose-decomposing bacteria, packing, sealing, and adding culture liquid of inoculating Phanerochaete chrysosporium, Trichoderma sp., Rhizopus sp., Panaeolus sp. and Coprinus sp., and drying product.    USE - The method is useful for preparing rhe bioorganic fertilizer (claimed).    DETAILED DESCRIPTION - Method for preparing bioorganic fertilizer using agricultural organic waste, involves (a) testing the organic microorganism content in the agricultural organic waste raw material, mixing the raw material and microorganism in a weight ratio of 1000:1, stirring uniformly after turning in composting yard shed by performing enzymolysis at 40-55 degrees C for 24 hours, where the highest temperature is not greater than 62 degrees C, the viable count of the composite beneficial microbial colony per gram is not greater than 2 hundred million, and the microbial content in the enzymolysis material is more than 0.2 hundred million, the material infrastructure is below 5 degrees C, the basic temperature of the material is 5 degrees C and the water content is less than 60%, (b) conducting enzymolysis during the adjustment of carbon, nitrogen ratio supplemented by ventilation at 45 degrees C for 7-10 days, where the moisture content while composting is maintained at 55%, and the weight fraction of the carbon and nitrogen is 40, (c) drying, granulating, adding yeast, nitrogen-fixing bacteria and cellulose-decomposing bacteria in a weight ratio of 1:1:1, packing and sealing, where the yeast is obtained by culturing source of the yeast at 26 degrees C for 30 hours, growing yeast culture to obtain pure seed culture, mixing the pure yeast, inoculating in seed culture medium, and culturing at 26 degrees C for 48 hours, adding protecting agent and attached type agent, and drying at 25 degrees C for 2 hours to obtain powder-type yeast, the nitrogen-fixing bacteria is obtained by culturing the source of nitrogen-fixing bacteria in the absence of nitrogen at 18-40 degrees C, growing strain having nitrogenase activity at optimum temperature for growth and nitrogen fixation to be 26-37 degrees C, maintaining pH by converting acidic to slightly alkaline pH value of 5 and a pH under the conditions of 8, maintaining strong growth potential and higher nitrogenase activity, adjusting metabolic acids, and adding 0.5-2.5 gl-1 sodium chloride and 0.05-0.50 gl-1 diammonium sulfate in the culture fluid, and the cellulose-decomposing bacteria is obtained by culturing the cellulose-decomposing bacteria sources in cow dung medium prepared by adding 150 g cow dung in 1000 ml beaker, pouring 400 ml water, stirring for 30 minutes, taking the residue, taking 100-250 ml flasks, transferring and allowing to stand, performing shake flask culture, obtaining culture inoculant, adding in 100 ml liquid manure cast medium in 250 ml flask, stirring at 120 revolutions/minute (rpm) amd 45 degrees C for 3-5 days, and (d) inoculating Phanerochaete chrysosporium, Trichoderma sp., Rhizopus sp., Panaeolus sp. and Coprinus sp. in potato dextrose agar (PDA) containing culture medium, culturing to obtain the spore concentration of 1x 108 spores, where the PDA culture medium comprises 200 g/l potato, 17-20 g/l glucose and 20 g/l agar, and using the fermentation liquid of fermented cow dung culture medium to obtain suspension mixture, and drying to obtain fermentation microbial inoculum.