1. Nauclea officinaIis is wildly used in clinical, but the researches about chemical constituents and biological activities were not much showed in reports.

2. A new alkaloid, nauelefiline, was isolated from Nauclea officinalis Pierre ex Pitard.

3. The results whowed that drying characteristics of Nauclea diderrichii are as following: Classifications of initial checks or cross section deformation are 3 and classification of inner checks is 2.

4. Conclusion: This method can be used to control the quality of unfinished product of Nauclea injection.

5. Advances in studying on chemical components, pharmacological effect and toxicology of Nauclea L. in recent 10 years are summarized in this paper.

6. Objective: To establish HPLC fingerprints of unfinished product of Nauclea injection.