Abstract:Eleven species of Dendrobium grown in Sichuan Province were studied including their classifications and distribu-tions. All of them are used a the merchandise Shihu. Among them,there are 3 species which are found in Sichuan forthe first time and 2 new species whose medical effects are described here in. Problems about the exploitation,utiliza-tion,quality standards, etc. of these resources are preliminarily discussed. A key for the identification of all these 11species has been compiled and presented.