Abstract: Ggnocardia odorata R. Br. is listed in the catalogue of the Rare and Endangered Plants of China(The Red Book). Distributional pattern of this species belongs to elements of Tropical lndia to South China, especially Southwest China. Based on the distributional and morphological characters,the auther supposes that the origin of this species is located in the south area of Laurasia and become a survivor up to now. The growing enviroment, develop regularity and community compeition are discussed, The author investigntes that the community characteristics are similiar to that of ttopical rainforest community. The factors that influence this species being endangeted are analysized.