Objective: Through chemical analysis of the essential oils obtained from prepared Chinese study Angelica to provide a scientific evidence for compatibility study of Siwu decoction.
Method: Capillary GC-MS.
Results: In the essential oils of the head of Angelica 88 peaks have been detected and 42 of them (51.34% of the oils) have been identified; while in those of the whole Angelica 94 peaks have been detected and 54 of them (90.86% of the oils) have been identified.
Conclusion: Constituents in the essential oils obtained from prepared Chinese Angelica have been identified for the first time.