Abstract: Cinnamomum longepaniculatum (Gamble) N. Chao ex H. W. Li is endemic to Centre China. The plant materials were collected from west Hubei. The essential Oil extracted from fresh leaves by steam distillation, were examined qualitatively and quantitatively by the methods of capillary GC/MS/DS on Finnigan-4510 type. 45 compounds have been identified, which made up 97.33% of the total oil. The major components are bulnesol (44.78%),β-eudesmol (15.61%),geranial (10.80%),neral (7.63%),quaiol (5.07%) and β-caryophyllene (2.46%).As the result, another new chemical form of Cinnamomum longepaniculatum-bulnesol form was found.