NOVELTY - Organic waste decomposing microbial inoculum, comprises microbial agent I (55-60 wt.%) and microbial agent II (40-45 wt.%) respectively comprising broth and a carrier, where the broth is adsorbed on the carrier, and the ratio of broth and carrier is 2-3 hundred million number of bacteria/g carrier. The microbial agent I comprises photosynthetic bacteria, Bacillus, Bacillus type, fiber producing Cellulomonas, brown spherical solid nitrogen bacteria and Pseudomonas fluorescens according to colony forming unit (cfu) ratio of 2:2:1:1:1:1.    USE - The organic waste decomposing microbial inoculum is useful for treating the organic waste for producing organic fertilizer (claimed).    ADVANTAGE - The inoculum is capable of efficiently solving stacking of organic waste caused by open sewers, malodorous odor, mosquitoes flying and other pollution problems, and can generate high quality organic fertilizer.    DETAILED DESCRIPTION - Organic waste decomposing microbial inoculum, comprises microbial agent I (55-60 wt.%) and microbial agent II (40-45 wt.%) respectively comprising broth and a carrier, where the broth is adsorbed on the carrier, and the ratio of broth and carrier is 2-3 hundred million number of bacteria/g carrier. The microbial agent I comprises photosynthetic bacteria, Bacillus, Bacillus type, fiber producing Cellulomonas, brown spherical solid nitrogen bacteria and Pseudomonas fluorescens according to colony forming unit (cfu) ratio of 2:2:1:1:1:1. The microbial agent II comprises Trichoderma viride, Candida utilis, Penicillium and color variation Streptomyces according to cfu ratio of 4:4:2:1. INDEPENDENT CLAIMS are also included for:    (1) preparing the organic waste decomposing microbial inoculum, comprising: (i) inoculating bacteria of microbial agent I and microbial agent II into different culture medium, shaking at 180 revolutions/minute and shake culturing at 30 degrees C for 1-2 days, and diluting to form broth of 2-3 billion/ml, (ii) according to 2-3 billion/g, making respective broth to adsorb on the carrier, and mixing strains of microbial agent I and microbial agent II to obtain microbial agent I and microbial agent II, and (iii) mixing the microbial agent I and microbial agent II;    (2) use of the organic waste decomposing microbial inoculum for treating the organic waste for producing organic fertilizer; and    (3) method for treating the organic waste for producing organic fertilizer, comprising adding 0.5-1 wt.% of the organic waste into the organic waste decomposing microbial inoculum for preparing stack, maintaining the water content of stack to be 55-65%, turning stack every 6-7 days for 3-4 times, and completing the fermentation to obtain efficient bio-organic fertilizer.