Abstract: Marsdenia sinensis Hemsl (antisnake bite drug) from Ling Xian of Hunan was observed and studied on its form of original plant,structure of organization, dissociation of organization by the method of scanning electron microscope, and its characteristics of structure are summarized and reported for the first time. In this article authors add and correct descriptions of predecessors on the frist time. form of original plant of Marsdenia sinensis Hemsl, these provided scientific basis for identification of Marsdenia sinensis Hemsl.