The off-white mycelium feathers were evenly distributed in the early days and were white. In the late period, there are bunch-like inflorescences, with roots distributed at the base of the spike. There are many black scars on the surface and no other spots, indicating that the fungus is growing well. Tremella mycelium penetrates into the medium, that is, "eats" very deep, there is a thick layer of Tremella mycelium under the ear. The light color of the wood chips indicates that the mycelium has a strong decomposition ability. The proportion of ash mycelium in Tremella mycelia is medium, and white hair is formed on the surface of the middle body, and the white body is larger. The bacteria in the white-haired group grow vigorously and the ears are large, indicating that the bacteria in the white-haired group are young and strong, suitable for wood cultivation. If the size of the white hair varies, or the fruiting bodies quickly appear in the bottle, it means that the bacteria have grown old due to excessive swelling. If the gray hair is easily gelatinized into a small fungus, it means that the strain is close to physiological maturity and is suitable for cultivation of alternative materials. If gray mold is rare, it has not penetrated into the culture, the fruit bodies are micelles or spiny, and the slices are not opened, and the medium is too wet or too firm. If there are feathery white fungus and no white hair, it can only be used as yeast-like fungus conidia, otherwise it cannot be used. If the upper mycelium of the bottle is sparse or disappears, the lower mycelium of the bottle grows normally, the ear roots become red, and a large amount of red-brown liquid is produced, most of which are caused by mites. If a white flocculent membrane is found, the membrane is contaminated with different bacteria and cannot be used.