NOVELTY - Preparation of Hypsizygus marmoreus cultivation material includes providing bagasse, wood chips, bean cake, mushroom material, lime, calcium superphosphate and gypsum, taking mushroom material, adding clean water, soaking at room temperature, uniformly mixing with bagasse, wood chips and bean cake, piling into trapezoidal stack, controlling culture material dry weight, plugging with a stick to provide a vertical hole on a stack, covering with grass thatch, naturally fermenting, when material temperature reaches 60 degrees C, keeping the temperature for 24 hours, and turning once a day.    USE - Preparation of H. marmoreus cultivation material (claimed) used for promoting the growth of H. marmoreus.    ADVANTAGE - The method uses mushroom material, which is purely natural nutrient liquid containing rich biologically active substances, promotes beneficial microorganism breeding, improves microorganism flora and accelerates cultivation material catalytic decomposition, provides cultivation material with high activity bacterium and active metabolite, saves labor, coal and other resources, reduces environmental pollution and is suitable for low-carbon environment-friendly implementation.    DETAILED DESCRIPTION - Preparation of H. marmoreus cultivation material comprises providing 48-52% bagasse, 26-30% wood chips having particle diameter of 3-5 mm, 12-14% bean cake, 3-4% mushroom material, 3-4% lime, 1% calcium superphosphate and 1% gypsum, where total amount is 100% based on dry material, and mushroom material is from mushroom production processing waste, which is dried and crushed into 2-3 mm particles, taking mushroom material, adding 20-30 times by weight of clean water, soaking for 18-24 hours at room temperature, uniformly mixing with bagasse, wood chips and bean cake, piling into trapezoidal stack having height of 1.0-1.2 m and width of 2-3 m, controlling culture material dry weight at 300-500 kg, plugging with a stick having a diameter of 10-15 cm to provide a vertical hole on a stack, where stomatal density is 1/m3, covering with grass thatch, naturally fermenting, when material temperature reaches 60 degrees C, keeping the temperature for 24 hours, turning once a day, where after first turning, adding lime, and after second turning, adding gypsum and calcium superphosphate, where total turning is 3-4 times, fermenting for 5-6 days, controlling culture material water content at 63-65%, putting into 17 cmx 35 cmx 0.004 cm polypropylene plastic bag, inoculating H. marmoreus strain, cultivating in dark room at controlled temperature of 18-20 degrees C and humidity of 60-75% for 22-24 days, and conducting conventional fruiting management.