NOVELTY - Method for preparing cultivation material for Hypsizygus marmoreus cultivation, involves immersing crushed shiitake mushroom stem in purified water, uniformly mixing obtained solution and residue, adding corncob, bagasse and bean cake, stacking mixture, performing natural fermentation, adding lime, gypsum and calcium superphosphate, turning mixture to obtain cultivation material, adding the cultivation material to polypropylene plastic bag, inoculating H.marmoreus into the cultivation material, and performing cultivation and fruiting management.    USE - The method is useful for preparing cultivation material which is used for cultivation of H.marmoreus (claimed).    ADVANTAGE - The method improves catalytic degradation of the cultivation material, promotes growth of H.marmoreus, saves human labor, and is environmentally-friendly to perform.    DETAILED DESCRIPTION - Method for preparing cultivation material for Hypsizygus marmoreus cultivation, involves (a) obtaining 100% composition comprising dry substances of 42-48% corncob, 29-35% bagasse, 12-14% bean cake, 3-4% shiitake mushroom stem, 4-5% lime, 1% calcium superphosphate and 1% gypsum, respectively crushing the corncob and bagasse to obtain powders having particle diameter of 3-5 mm, drying the shiitake mushroom stem, and crushing the shiitake mushroom stem to obtain crushed shiitake mushroom stem having 2-3 mm size, (b) immersing the crushed shiitake mushroom stem in 20-30 times purified water at room temperature for 18-24 hours, uniformly mixing obtained solution and residue, adding corncob, bagasse and bean cake, stacking obtained mixture to a height of 1-1.2 m and width of 2-3 m, controlling weight of each stack at 300-500 kg, tapping the stack for 4 weeks, inserting wooden stick having diameter of 10-15 cm into stack, covering the stack using tarpaulin, and performing natural fermentation for 5-6 days, (c) controlling fermentation temperature at 60 degrees C for 24 hours, and performing turning process once/day (totally for 3-4 times) during fermentation to obtain cultivation material having water content of 63-65%, where lime is added during turning process for first time, and gypsum and calcium superphosphate are added during turning process for second time, and (d) obtaining polypropylene plastic bag having size of (17 cm)x (35 cm)x (0.004 cm), providing hole in both ends the bag, adding the cultivation material to the bag, inoculating H.marmoreus into the cultivation material, performing cultivation at 18-20 degrees C for 23-25 days in dark room, controlling humidity at 60-75% during cultivation, and performing fruiting management when the bag is covered with mycelium.