PROBLEM TO BE SOLVED: To provide an indoor artificial cultivation method for generating Leucopaxillus giganteus with high quality every year continuously and stably.SOLUTION: A plurality of mushroom beds of subdivided Leucopaxillus giganteus is mixed or contacted and they are with materials for embedding fungus in the container. A mycelial pellet is arranged away from at least one face of a container inner wall by a given distance in view of the upper surface of the container. The atmosphere in the container is maintained below 20°C, and the spawn is grown. Then, after maintaining the atmosphere at a higher temperature than the temperature at which the spawn was grown, the atmosphere in the container is maintained in below 20°C again.
