NOVELTY - Producing organic fertilizer by papermaking materialized sludge and corn cob, involves: (1) mixing sludge with corn cob in ratio of 1.5-3.0:1, stirring, piling mixed material, fermenting compost, spraying alkaline peroxide mechanical pulping (APMP) slurry black liquid to piler, obtaining rotten material containing organic matter (20-25 mass%); (2) crushing rotten material, adding humic acid, making dosed material containing organic matter (30 mass%); (3) pumping material into stirrer; (4) drying; and (5) delivering into screening machines, obtaining round granulate organic fertilizer.    USE - For producing organic fertilizer (claimed).    ADVANTAGE - The method promote low water content of the corn core, shortens fermentation period of the corn core; does not need additional agent, further reduces the production cost; provides simple steps in short period; and solves the problem of the waste, also realizes the resource recycling.    DETAILED DESCRIPTION - Producing organic fertilizer by papermaking materialized sludge and corn cob, involves: (1) mixing papermaking dewatered materialized sludge with corn cob in ratio of 1.5-3.0:1, uniformly stirring, obtaining mixed material, making the water in mixed material as 50-60%, piling the mixed material into piler, leaving an air introducing cave below the piler, fermenting compost, turning the piler every other 4 days by a turning machine, spraying the alkaline peroxide mechanical pulping (APMP) slurry black liquid to the piler every other 3 hours, keeping the water content of the mixed material as 50-60%, introducing air and supplying oxygen at intervals through the air introducing cave below the piler by a general air blower, introducing air at 0.2-0.4 cubic m/hour for twice respectively in the morning and in the evening, introducing air for 20-40 minutes every time, fermenting compost for 30-40 days, obtaining rotten material containing organic matter (20-25 mass%); where the papermaking dewatered materialized sludge is the materialized sludge dewatered by papermaking sewage treatment plant, and mainly containing the materials (wt.%): water (75-80), organic matter (18-23), nitrogen (1-1.5), phosphorus (0.3-0.4) and potassium (0.6-0.8); the organic matter contains crude fiber (2-3 wt.%); the APMP slurry black liquid is the black liquid produced while making slurry by the papermaking factory by APMP method; (2) dosing: crushing the rotten material in step (1) by a grinder, adding humic acid into the crushed rotten material to dose, making the dosed material containing organic matter (30 mass%), the ratio of the rotten material to humic acid is (3.5-4.5):1; (3) granulating: pumping the material prepared in step (2) into a stirrer, entering into a double-disk granulator after uniformly stirring; (4) drying: drying in a dryer after granulating; and (5) screening: delivering into three layers of screening machines after drying, obtaining round granulate organic fertilizer product with diameter of 2-4.