NOVELTY - Cultivation of vegetable soilless culture medium comprises preparing organic agricultural wastes comprising cassava waste, mushroom waste, palm thread, and perlite; crushing, stirring, adding microbial agent, stirring, and stacking; fermenting, turning, and polishing; turning and fermenting, monitoring real time moisture, stacking, turning, detecting water content, and reducing water content; adding acidic ammonium sulfate fertilizer, piling, ripe fermenting, and turning; sieving, detecting, and returning to fifth step if standards are not met; and sieving, weighing, and packing.    USE - Method for cultivating vegetable soilless culture medium (claimed).    ADVANTAGE - The method solves problem such as utilization of biomass resources, unstable product quality, poor root biomass resources nursery substrate, slow seedling, and low survival rate and avoids waste pollution on the environment.    DETAILED DESCRIPTION - Cultivation of vegetable soilless culture medium comprises:    (A) preparing organic agricultural wastes raw materials comprising 55-70 pts. wt. cassava waste, 20-40 pts. wt. mushroom waste, 8-10 pts. wt. palm thread, and 15-20 pts. wt. perlite, where water content in cassava waste is 35-45% and water content in mushroom waste is 10-15%;    (B) crushing agricultural wastes, stirring, adding microbial agent, stirring, where microbial content is more than 105 unit/g, carbon/nitrogen ratio is 20-30, and water content is 45-55%, and stacking;    (C) fermenting at more than 55 degrees C, initial turning, and polishing;    (D) turning and fermenting for 1-2 months, monitoring real time moisture, stacking at 50 degrees C, turning, detecting water content to less than 25%, water supplying until 25-40%, detecting moisture, turning, and reducing water content to 20-40%;    (E) adding 1-3 kg/m3 acidic ammonium sulfate fertilizer, piling and fermenting, ripe fermenting for 1.5 months, and turning 4-7 times;    (F) sieving, detecting pH at 6.5-7, emulsifiable concentrate at 0.9-1.3 mS/cm, bulk density at 0.2-0.3 g/cm3, water content at 30-40%, and organic matter content at 75-80%, and returning to fifth step if standards are not met; and    (G) sieving, weighing, and packing.