NOVELTY - A functional microorganism fertilizer is obtained by decomposing and fermenting agricultural waste material using 50-100 g/T fermentation agent composition comprising Bacillus subtilis, Bacillus licheniformis, Trichoderma harzianum and Trichoderma viride, and mixing with 6-10% humic acid, 6-10% rice husk ash and 100-500 g/T Arbuscular mycorrhizal inoculum. The microorganism fertilizer contains (mass%) mushroom residues (60-70) and livestock wastes (15-25). The water content of fertilizer is 60-65%.    USE - A functional microorganism fertilizer.    ADVANTAGE - The preparation of fertilizer provides economic and effective technical path for recycling agricultural waste material, promotes development of organic green agriculture, controls and reduces rural environment pollution, and improves rural ecological condition.    DETAILED DESCRIPTION - A functional microorganism fertilizer is obtained by decomposing and fermenting agricultural waste material using 50-100 g/T fermentation agent composition comprising B. subtilis, B. licheniformis, T. harzianum and T. viride, and mixing with 6-10% humic acid, 6-10% rice husk ash and 100-500 g/T Arbuscular mycorrhizal inoculum. The microorganism fertilizer contains (mass%) mushroom residues (60-70) and livestock wastes (15-25). The water content of fertilizer is 60-65%. The Arbuscular mycorrhizal inoculum comprises Glomus mosseae, Glomus etunicatum and Glomus versiform. An INDEPENDENT CLAIM is included for preparation of functional microorganism fertilizer, comprising crushing 60-70% mushroom residues and 15-25% livestock wastes into 2-3 mm, and regulating water content at 60-65% to obtain main material; adding 50-100 g/T fermentation agent composition into mixed material, piling, fermenting and decomposing for 15-30 days, and rotating 5-10 times; uniformly mixing additives comprising 6-10% humic acid, 6-10% rice husk ash and main material; and adding 50-100 g/T Arbuscular mycorrhizal inoculum and passing through 3 mm sieve to obtain product.