Ectomycorrhizal Fungi China is rich in ectomycorrhizal fungi, with more than 600 species known, such as Russula, Lactarius, Amanita, Boletus, Pleurotus ostreatus and truffles of Ascomycetes. The research and application of ectomycorrhizal fungi is of great significance to the development of forestry seedlings, the promotion of forest growth and development, and the greening of barren hills and wasteland in mining plants. Experiments show that; Using ectomycorrhiza can make trees mature 4 ~ 5 years in advance. In addition, the study of ectomycorrhizal fungi and their mycorrhizal relationship is also of practical significance for further domesticating wild edible fungi and expanding the cultivation and production of high-quality edible fungi.