NOVELTY - An organic compound microbial bacterium fertilizer comprises 5-10 wt.% fermentation bacteria liquid, 70-80 wt.% grass, 9.8-24.5 wt.% rotten chicken manure and 0.2-0.5 wt.% diammonium phosphate.    USE - Organic composite microorganism bacterial fertilizer.    ADVANTAGE - The preparation has simple operation technique, short production period, low cost, simple operation technique, short production period, low cost, full function, high quality and good application effect, which produces high quality microbial organic fertilizer product for agricultural production.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparing organic composite microorganism fertilizer comprising: (A) taking Agaricus blazei solid nitrogen fixing bacteria, Bacillus subtilis and Bacillus licheniformis, inoculating in luria broth (LB) culture medium, inoculating jelly-type Bacillus to silicate bacteria culture medium, at 37 degrees C, shaking culture for 24-48 hours, to obtain first level seed liquid of A. blazei solid nitrogen fixing bacteria, first level seed liquid of B. subtilis, jelly-type Bacillusfirst level seed liquid and B. licheniformis first level seed liquid; (B) mixing first level seed liquids of B. subtilis, B. licheniformis and jelly-type Bacillus in secondary seed tank at a volume ratio of 1:1:1 to obtain second level seed liquids of B. subtilis, B. licheniformis and jelly-type Bacillus, fermenting A. blazei solid nitrogen fixing bacteria first seed liquid to obtain A. blazei solid nitrogen fixing bacteria second level seed liquid; (C) placing second level seed liquid to a fermentation tank to obtain ferment bacteria liquid, where A. blazei solid nitrogen fixing bacteria second seed liquid to ferment bacterial liquid prepared by mixing second level seed liquid to ferment Bacillus to obtain second bacteria liquid; (D) mixing first bacteria liquid and second bacteria liquid according to (1-3):1, mixing together to obtain mixed ferment bacteria liquid; and (E) stirring and absorbing 5-10% mixed liquid (total weight percentage) and 70-80 % grass (accounting for total mass percent), then mixing with 10-25 wt.% rotten chicken manure, 0.2-0.5 wt.% phosphate, fully mixing and crushing to 60-80 mesh to obtain product.