NOVELTY - Preparing humic acid bacterial manure comprises: (i) selecting weathered coal as a sample from a weathered coal pile, diluting and cultivating by streak plate method; (ii) cultivating the separated weathered coal as an intermediate repeatedly to obtain a cultivating seed; (iii) crushing the weathered coal, adding the cultivating seed, fermenting in a fermenting groove to obtain a first fermenting weathered coal; (iv) adding into a cultivating seed for prilling after remixing to obtain a second fermenting weathered coal; (v) filtering, drying, weighing and packaging.    USE - The method is useful for preparing humic acid bacterial manure.    ADVANTAGE - The method: is simple; has mild reaction conditions; and is environment friendly in comparison with the conventional method. The manure increases humic acid, high microorganism viable bacteria and long acting time and good effect.    DETAILED DESCRIPTION - Preparing humic acid bacterial manure comprises: (i) selecting weathered coal as a sample from a weathered coal pile, diluting 5-30 times the sample as a culture medium with water, cultivating at 37 degrees C by streak plate method, repeatedly regulating the culture medium by using the weathered coal chosen by an inoculating loop, separating the weathered coal for processing at pH of 6.2-8.3, temperature of 20-37 degrees C for 72-168 hours, where the separated weathered coal comprises mycete, Actinomycetes and bacterium; (ii) cultivating the separated weathered coal as an intermediate in: a triangle bottle for 72-168 hours, at 20-37 degrees C and pH 6.2-8.3, a big triangle bottle for 72-168 hours at 20-37 degrees C and pH 6.2-8.3, in a primary seeding can for 72-168 hours at 20-37 degrees C at pH 6.2-8.3, in a two-stage seeding can for 72-168 hours at 20-37 degrees C and pH 6.2-8.3, and a two-stage can for 72-168 hours to obtain a cultivating seed; (iii) crushing the weathered coal having lower than 0.2 mm grain diameter, adding the cultivating seed (1-2 wt.%), fermenting for 7-15 days in a fermenting groove at 25-37 degrees C after mixing to obtain a first fermenting weathered coal; (iv) adding the first fermenting weathered coal (1-2 wt.%) into the cultivating seed for prilling after remixing to obtain a second fermenting weathered coal, where the grain diameter is 0.2-0.8 mm; (v) filtering, drying, weighing and packaging the second fermenting weathered coal as the final product.