Abstract:The chemical components of the essential oil from the peel of Citrus bergamia Risso., which is first introduced successfully by us from abroad, were identified by GC-MS-DS technique, dual column retention index, and dual column authentic sample superimposition. The relative content of components of the essential oil, obtained by different methods, were measured. The experiment results indicated that the chemical components of the essential oil from the peel of Citrus bergamia Risso. are in agreement with values reported in articles abroad.