NOVELTY - Method for producing composite bacterial flora, involves preparing cattle manure culture medium, adding obtained inoculant to liquid cattle manure culture medium, culturing Phanerochaete chrysosporium, Trichoderma sp., Rhizopus sp., Panaeolus sp. and Coprinus sp. in culture medium containing potato dextrose agar to obtain spore and drying the obtained product.    USE - The method is useful for producing composite bacterial flora for decomposing wood fibers, cattle manure, pile compost and agricultural straw (both claimed), preferably rice straw.    ADVANTAGE - The method produces bacterial flora simply, rapidly and easily in large amounts with high activity. The bacterial flora has short fermenting period, preferably 25 days, and is easy to use.    DETAILED DESCRIPTION - Method for producing composite bacterial flora, involves (a) preparing cattle manure culture medium by adding cattle manure (150 g) to 1000 ml beaker, adding water (400 ml) to the cattle manure, uniformly stirring the mixture for 30 minutes, filtering the stirred mixture to remove residue, and adding the obtained filtrate (100 ml) to 250 ml triangular flask, (b) preparing inoculant cultivated in a shake flask, inoculating the inoculant in cattle manure to obtain 40 g of pile compost, obtaining pile compost (20 g), screening the obtained material, adding the obtained product in 1000 ml beaker containing 50 ml of water, and uniformly stirring the obtained mixture for 30 minutes, (c) obtaining inoculant (10 ml) from the stirred mixture, adding the obtained inoculant to 250 ml triangular flask containing 100 ml of liquid cattle manure culture medium, and arranging the flask on shaker bed for culturing at speed of 120 revolution/minute (rpm) and at 45 degrees C for 3-5 days, (d) culturing Phanerochaete chrysosporium, Trichoderma sp., Rhizopus sp., Panaeolus sp. and Coprinus sp. which are separated from the cattle manure by normal microorganism separating method in culture medium containing potato dextrose agar (PDA) to obtain the spore, where the concentration of the spore is 1x 108/ml, and the PDA culture medium is obtained by mixing (in g/l) glucose (20) and agarophyte (20), and dissolving potato leaching solution (200) to the obtained mixture, and (e) mixing the P.chrysosporium with the spore suspension liquid of Trichoderma sp., Rhizopus sp., Panaeolus sp. and Coprinus sp. in the volume ratio of 2:1:1:1:1:1, and drying the obtained product to obtain fermentation microbial agent.