NOVELTY - Producing microbial fermentation organic fertilizer, comprises (i) providing components e.g. sludge, chicken manure and cow dung, (ii) drying the sludge, adding organic matter composting agent, stacking, fermenting, turning pile, fermenting to obtain fermentation sludge, (iii) mixing the chicken manure and cow dung, adding organic matter composting agent, fermenting to obtain fermentation mixture, and (iv) mixing fermentation sludge and fermentation mixture of chicken manure and cow dung with bean pulp, pepper pulp cake and cotton seed cake, crushing, and adding microbial functional bacteria.    USE - The method is useful for producing microbial fermentation organic fertilizer.    ADVANTAGE - The method utilizes sewage sludge and saves landfill cost.    DETAILED DESCRIPTION - Producing microbial fermentation organic fertilizer, comprises (i) providing components (in parts by wt.) for preparing the microbial fermentation organic fertilizer comprising sludge (30-60), chicken manure (20-45), cow dung (10-35), bean pulp (1-3.5), pepper pulp cake (1-4) and cotton seed cake (1.2-3.5), (ii) drying the sludge in the sunlight until the humidity is 28-35%, adding organic matter composting agent, stacking pile instantly at height of 1.5 m, inserting a thermometer into the pile, controlling the temperature at 45 degrees C, fermenting for 4-10 days, and then turning pile to go on fermenting, turning pile for the second time when the temperature of the pile is 55 degrees C, fermenting again and stopping fermenting when the temperature is 60-80 degrees C to obtain fermentation sludge, in which the weight ratio of the sludge to the organic matter composting agent is 300-500:0.1, (iii) mixing the chicken manure and cow dung according to the above mentioned weight ratio to obtain manure mixture, adding organic matter composting agent to pile at height of 1.5 m instantly, inserting the thermometer into the pile, fermenting by using a fermenting process same as the fermenting process in the step (ii), stopping fermenting to obtain fermentation mixture of chicken manure and cow dung, in which the weight ratio of the manure mixture to the organic matter composting agent is 300-500:0.1, and (iv) mixing the fermentation sludge and fermentation mixture of chicken manure and cow dung with bean pulp, pepper pulp cake and cotton seed cake uniformly, and then adding into a crushing machine, crushing until 60-80 meshes to pass a sieve to obtain crushed mixture, and finally adding microbial functional bacteria to mix uniformly and packing to obtain the finished product.