Objective: To study the character of the microscopic identification and active ingredients' TLC identification of the of the leaves of Dalbergia odorifera. Method: The drug properties

microscopic and TLC identification of the leaves of D. odorifera T.Chen were adopted. Result: The microscopic characteristics of Dalbergia odorifera leaves mainly were that ray cells

phloem cells contain rich calcium oxalate crystals

paracytic type stomata was mainly on the lower epidermis

and the non-glandular hairs were composed of two cells which were variable size with wall warts significantly.The TLC of the both producing area could be used to detect the isoflavone 6-hydroxy-biochanin A and biochanin A. Conclusion: The method of the microscopic identification and TLC can differentiate the leaves of D. odorifera effectively.