NOVELTY - Rapid digestion of sludge using high-temperature multi-strain complex micro-organisms by harmless treatment method, comprises e.g. adding edible mushroom culture medium wastes, crushed Eupatorium odoratum, tobacco stem residue, coal ash, lanthanide oxides and micro organism composition into a sludge of the sewage treatment plant, adding a modifier to modify the sludge, conveying the sludge to an flexible frame filter through a pump, completely filling the sludge, performing pressure filtration and dehydration, and spraying a high-temperature multi-strain complex microorganism.    USE - The method is useful for rapid digestion of sludge using high-temperature multi-strain complex micro-organisms by harmless treatment method.    DETAILED DESCRIPTION - Harmless treatment process for rapid digestion of sludge using high-temperature multi-strain complex micro-organisms, comprises (i) adding (in wt. %) edible mushroom culture medium wastes (3-8), crushed Eupatorium odoratum (2-6), tobacco stem residue (3-6), coal ash (6-10), lanthanide oxides (0.5-1) and micro organism composition (0.3-1) into a sludge of the sewage treatment plant; (ii) adding a modifier to modify the sludge, conveying the sludge to an flexible frame filter through a pump, completely filling the sludge, performing pressure filtration and dehydration to cause the moisture content of the sludge to be lower than 40%; (iii) spraying a high-temperature multi-strain complex microorganism, uniformly mixing in a material transformation machine, performing stacking fermentation for 30 minutes to eliminate odor, passivating heavy metals after 2 hours of fermentation, increasing the stacking temperature at 50-60 degrees C after 24 hours, maintaining the temperature below 70-85 degrees C for 3 days after 48 hours, performing strong decomposition of the materials using the high-temperature microbial strain to accelerate the decomposition of hard substances e.g. cellulose in a natural condition, rapidly degrading organic matters, eliminating odor and passivating the heavy metals.