NOVELTY - The method comprises selecting a compound microorganism preparation made from fungus, putting the compound into the organic waste raw material, performing fermentation, mixing 20-40% of oil sally bean dregs, 40-60% of crop straw and 15-25% of poultry excrement and then crushing to obtain a main material, adjusting the water content to 60-65%, putting the compound fermentation agents (150-200 g/t) into the material mixed well to stack to be cone-shaped, sealing outside by yellow mud, sealing and covering the mixtures by a plastic film, and stacking and performing fermentation.    USE - The method is useful for preparing microorganism fertilizer from agricultural wastes.    ADVANTAGE - The method is capable of preparing the microorganism fertilizer with high yield and quality in an environmentally friendly manner thus enhancing the drought and disease resistance tolerance of plants with high yield and quality.    DETAILED DESCRIPTION - The method comprises selecting a compound microorganism preparation made from fungus, putting the compound into the organic waste raw material, performing fermentation, mixing 20-40% of oil sally bean dregs, 40-60% of crop straw and 15-25% of poultry excrement and then crushing to obtain a main material, adjusting the water content to 60-65%, putting the compound fermentation agents (150-200 g/t) into the material mixed well to stack to be cone-shaped, sealing outside by yellow mud, sealing and covering the mixtures by a plastic film, stacking and performing fermentation to have the product become thoroughly decomposed, performing stacking fermentation to have the product become thoroughly decomposed for 30-35 d, turning for 2-3 times during this time, mixing the auxiliary materials including 5-10 wt.% of mushroom residues and 6-10 wt.% of rice hull ash with the main material prepared well by fermentation uniformly, putting arbuscular mycorrhizal fungi (600-1000 g/T) agent into the mixture, and sieving by a 3mm sieve to form the microorganism fertilizer. The Arbuscular mycorrhizal fungi agent comprises Glomus mosseae, Glomus etunicatum, Glomus versiformeto the mass ratio (W/W) of 3:3:2. The compound fermentation agent comprises Klebsiella pneumoniae subsp., Bacillus mucilaginosus, Bacillus megaterium, Bacillus subtilis and Trichoderma viride to the mass ratio (W/W) of 1.5:1:1:2.5:4.