Abstract:The micro- and ultramicro structures in stems of Calamus simplicfoius Wei.C.tetradactylus Hance and Daemonorops margaritae (Hance) Bece were observed with EM.The surface, epidermis, cortex, vascular bundles and parenchyma in the middla section of rattan were detailed in this paper. It comes to the conclusion that the structural characteristics of rattan will be help for classification, identification and selecting species.