Abstract: The Types and the Evolutionary Ways of Steles of Angiosperms From the phylogenic pointof view, the mesarch and diarch to polyarch haplostele remaining in the lower part of CNZ of angiosperms has developed from the primitive centrarch protostele like that in Rhyniophyta (Gifford and Foster 1988). But from the ontogenic point of view, both of the eustele of the stem and the actinostele of the root has derivatived from the haplostele in the lower part of CNZ. In the process of evolution of angiosperms "because of of the complexities of the environment and the protocambium cyl-inder and the changes of the differentiational direction of the protocambium cylinder, the eustele has developed into bicollateral eustele, amphicribral eustele, hysterostele, atactostele and amphivasal-atactostele.