Objective: To study on the microscopic and UV-Vis spectrum character of Cardiospermum halicacabum

a Zhuang folk medical herb

which is popularly applyed in Guangxi Zhuang Autonomous Region. Method: The microscopic identification and UV-Vis spectrum identification were adopted. Result: The fibers formed into interval circularity in the cortex of the root. The fibers showed ring-shaped in the cortex of the stem. There were two vascular bundles in main vein of the leaves. Non-glandular hairs and glandular hairs were found in the leaf surface. It could be observed that two kinds of fibers

lots of non-glandular hairs

glandular hairs

calcium oxalate cluster crystals and square crystals were in the powder. Six kinds of solvent of crude drug had absorption peaks in 200-800 nm

respectively. Conclusion: These results as above can be used to provide the scientific evidence for the establishment of standard for quality controland further study.