The invention discloses a Coprinus comatus bed cultivation method comprising the following steps: 1, compost preparation; 2, pilling for fermentation; 3, loading material on the bed, and inoculating; 4, bacterium cultivation management; 5, earthing and fruiting; 6, fruiting management; 7, harvesting; 8, re-harvesting. The Coprinus comatus bed cultivation method can fully recycle and utilize crop cores, can improve raw material cycle utilization rate, is low in cost, high in output, has very well market developing prospect, and the employed raw material is pollution free, and rich in nutrition; no fertilizer, pesticide and disinfectant is applied in the cultivation process, thus preventing human body from being harmed by chemical preparations, ensuring people health, solving environment pollution problem, ensuring Coprinus comatus nutrition values, obviously improving fruiting conversion rate, and improving fruiting output.