After disinfection, please cool in a clean and ventilated place. Put the original seeds in the test tube into the maternal medium by aseptic method. After inoculation, it should be transferred to the incubator immediately. After 3-4 days of cultivation, the mycelium will continue to grow. At this time, observe once a day until the white fungus mycelium covers the surface of the medium. Observation found that Mucor, Rhizopus and Trichoderma grow faster, green, yellow and black are Penicillium and various Aspergillus and should be removed in time. At room temperature, after about 15 days of cultivation, thick white hyphae appeared on the inoculated fungus. Around 20d, the mycelium was entangled with red and yellow water drops. When the primordium of the fruiting body appears, it can expand.