Orchidaceae is the most evolved specie in monocotyledon plant and endangered plants. Cymbidium ensifolium has the high ornamental and medicinal value. Geographical environment is ringed on three sides by mountains and the plant resources of C. ensifolium are extremely rich in Jiangxi province. In recent years, due to over-excavation and other reasons, the natural habitat of C. ensifolium was seriously damaged.