NOVELTY - Processing papermaking sludge involves measuring water content and nutrient content of mixture of papermaking sludge and additives, and adjusting carbon/nitrogen ratio to 25-29 and water content to 55-65%; placing the mixture of papermaking sludge and additives in fermentation tank, spraying microbial flora, repeating placing and spraying steps until the tank is fully filled, turning 3-5 times, uniformly stirring, and introducing oxygen; gradually increasing temperature and fermenting for 55-65 days; and granulating fermentation product, cooling to room temperature, and screening.    USE - Method for processing papermaking sludge to produce organic fertilizer (claimed).    ADVANTAGE - The method solves the environment pollution problem caused by papermaking sludge. The obtained fertilizer improves soil fertility, accelerates growth of crops, improves crop quality, and promotes other nutrient absorption effect.    DETAILED DESCRIPTION - Processing papermaking sludge involves:    (A) measuring water content and nutrient content of mixture of papermaking sludge and additives, and adjusting carbon/nitrogen ratio to 25-29 and water content to 55-65%, in which the additives comprise residues of corn or cornstarch factory;    (B) placing the mixture of papermaking sludge and additive in 1.2-1.6 m fermentation tank located on steel frame greenhouse, spraying microbial flora (4-5% of the mixture), repeating placing and spraying steps until the tank is fully filled, turning 3-5 times, uniformly stirring, and introducing oxygen, in which the microbial colony is effective microorganism (EM) original liquid or EM original liquid fermentation diluent;    (C) gradually increasing temperature, turning once when the temperature of material in fermentation tank reaches 45-50 degrees C, turning once when the temperature of material in fermentation tank reaches 65-70 degrees C, and fermenting at 65-70 degrees C for 55-65 days in steel frame greenhouse; and    (D) granulating fermentation product into particles with grain diameter of 2-4 mm, cooling to room temperature, and screening.