NOVELTY - Producing (M1) composite microorganism fertilizer by sludge biological leaching method involves: crushing biological leaching sludge using crusher to water content of sludge of 50-60%, where sludge has a particle size of less than 5.0 mm; b) sludge conditioning: adding lime (0.8-1.2% of dry weight of the sludge), adjusting pH value of the sludge to 5.0-6.0, adding auxiliary material (4-6% of sludge biological leaching wet), adjusting porosity of the sludge to 55-65%, fermenting, drying, adding function and pelleting envelope.    USE - For producing composite microorganism fertilizer (claimed).    ADVANTAGE - The method allows low production cost, and is safe and environmentally-friendly to use mud to produce biological leaching composite microorganism fertilizer. Using biological leachate soaking sludge as raw material directly to compost fermentation, there is no need to adjust by returning rotten material of the water content. The method reduces the construction cost, at the same time, reduces the power consumption and operating cost. The composite microbial fertilizer not only contains organic matter and nitrogen, phosphorus, potassium and so on plant growth necessary nutrient element, at the same time also contains a lot of iron element and the sulfur element. The effective viable count of the fertilizer product is more than 0.25 hundred million/g.    DETAILED DESCRIPTION - Producing (M1)composite microorganism fertilizer by sludge biological leaching method involves: a) crushing biological leaching sludge using crusher to water content of sludge of 50-60%, where the sludge has a particle size of less than 5.0 mm; b) sludge conditioning: according to the biological leaching, adding lime (0.8-1.2% of dry weight of the sludge), adjusting the pH value of the sludge to 5.0-6.0, at the same time, adding the auxiliary material (4-6% of sludge biological leaching wet), adjusting the porosity of the sludge biological leaching to 55-65%, controlling the fermentation raw material to organic matter at 30-60%, c) putting fermentation raw material (wet weight of 1.5%) in a reactor; inoculating sludge, putting the raw material into bioreactor to ferment, passing oxygen through turning mode, each for measuring and adjusting the water content, ferment temperature, oxygen content of the material, using environment room temperature higher than 10 degrees C to ferment the first day, the fermentation temperature is from room temperature to 40-50 degrees C, from the beginning the fermentation for 2 days to 13 days, the fermentation temperature is kept at 50-60 degrees C, then, the fermentation temperature is 50 degrees C, and for 7-10 days till cooling to room temperature, finally when oxygen concentration in the material is less than 10%, the fermentation is finished, d) drying: drying the cooling measure to reduce the water content of fermentation sludge, the water content is reduced to less than 20%, e) adding functional microbial inoculums: using spraying method by adding compound of potassium bacteria and soluble phosphorus bacteria liquid microbial inoculums to the fermented sludge after drying, f) preparing fertilizer: adding function and microbial inoculums to the sludge pelleting envelope, sludge biological leaching to form particle-type composite microbial fertilizer. An INDEPENDENT CLAIM is included for a composite microbial fertilizer obtained by the method (M1).    DESCRIPTION OF DRAWING(S) - The figure shows a schematic diagram of the process for producing composite microorganism fertilizer by sludge biological leaching. Drawing includes non-English language text.