Abstract:The essential oil (eucalyptus oil) of Eucalyptus globulus Labill from Yunnan province in China was examined by the exercise of capillary GC/MS/DS on Finnigan-4510 type. The physical properties of eucalyptus oil are as follows: n23/D 1.4617, d21/21 0.8973, [α]21/D + 7.18°.As the result 17 compounds were identified. The major compo- nents are 1, 8-cineole (66.42%), α-pinene (27.l8%), and safrole is not contained in the eucalyptus oil from Yunnan province.