Abstract: We deal with the anatomy of young stems and leaves of some Caragana species, the results are as follows:the young stems of all five observed species are identical in general structure, which have the characteristics of 5-7 cortical strands of fibers and developed periderm, in accordance with those of some other species by previous reports.The structure differences of leaves of eight observed species are mainly in the following aspects:with or without hypoderm, differential degrees of palisade and spongy tissue, and quantities of tanniniferous contents in mesophyll.The specialization of anatomical structure in Caragana erinacea, a species of high altitude representatives of Xizang (Tibet) and Sichuan, reflects the adaptation to special habitat of high altitude and cold, and this enablesa plant to differentiate strongly into xeromorphic structure.Therefore, it is of obvious significance in ecological adaptability.

Key words: Caragana, Anatomical structure, Ecological adaptability