NOVELTY - Method for preparing biological desulfurization deodorant by solid-state fermentation, involves mixing starch, diammonium phosphate, potassium phosphate, magnesium sulfate, calcium chloride, and corn steep liquor, adding mixture into vessel, stirring, heating mixture, adjusting pH, sterilizing, cooling, culturing medium, mixing beans, bran, corn flour, sodium chloride and calcium carbonate, adding water to the mixture, uniformly mixing, heating mixture, mixing all products with Streptomyces strain, fermenting, vacuum-drying, and vacuum packaging product.    USE - The method is useful for preparing biological desulfurization deodorant (claimed) which is used for removing pollutants of rotten sulfides of garbage disposal field, and sewage treatment station.    ADVANTAGE - The method is cost-effective, and environmentally-friendly.    DETAILED DESCRIPTION - Method for preparing biological desulfurization deodorant by solid-state fermentation, involves (a) adding spore type eggplant into 50-250 ml flask, cooling mixture, inoculating 200 mu l Streptomyces strain DS-021 spore suspension into the mixture, where the concentration of the spore suspension is 0.7-1x 108 spores/ml, culturing medium at 37 degrees C for 7-10 days, and storing medium at 4 degrees C, (b) mixing 10-30 g starch, 3-10 g diammonium phosphate, 0.4-1.5 g potassium phosphate, 0.3-1.2 g magnesium sulfate, 0.2-1.2 g calcium chloride, and 0.2-2 g corn steep liquor, adding mixture into vessel, stirring mixture, heating mixture, adjusting pH of the mixture to 5-8 using sodium hydroxide solution, sterilizing solution for 30 minutes, cooling medium to 20-40 degrees C, and culturing medium at 20-40 degrees C for 24 hours, (c) mixing beans, bran, corn flour, sodium chloride and calcium carbonate in a ratio of 0.5-1:8-9:0.5-1:0.1-0.5:0.1-0.5, adding water to the mixture, uniformly mixing the materials, and heating mixture at 110-125 degrees C for 0.5-2 hours, (d) mixing all products of the medium of steps (a)-(c) at 30-40 degrees C, (e) fermenting the mixture at 35-45 degrees C for 12 hours, and (f) vacuum-drying the mixture at 50 degrees C for 10-24 hours, and vacuum packaging product.