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An improved cultivation method for coprinus comatus comprises the following production steps: preparation of strains and compost, preparation of mushroom sticks and final-period management. The improved cultivation method for the coprinus comatus is characterized in that a method of covering soil in bags is used in the final-period management step, and the method of covering the soil in the bags includes multiple steps, wherein a step a is that material soil is prepared, namely cohesive soil with appropriate moisture is chosen and subjected to conventional sterilization treatment; a step b is that the bags are placed in order and covered with the material soil, more specifically, the mushroom sticks are placed together and vertically arranged, the upper end of each mushroom bag is untied, the material soil is taken for covering the material surface of each of the mushroom bags, the covering thickness is 3-5 centimeters, and fruiting furrows are covered with plastic films; a step c is that ventilation and moisture preserving management is carried out; and a step d is that the coprinus comatus is harvested and the mushroom bags are turned over, more specifically, after a first crop of the coprinus comatus is harvested, the material soil on the material surface of each mushroom bag is removed, the mushroom bags are turned around, and the step a and the step b are repeated, and then a second crop of the coprinus comatus is obtained. Through the improved cultivation method for the coprinus comatus, almost no diseases or pests exist, the yield of the coprinus comatus is stable, the amount of the material soil used for covering the bags is small, a field can be cleaned easily, labor intensity is lowered, continuous cultivation can be realized conveniently, and the coprinus comatus is attractive in appearance and good in commodity.