Objective: To analyze the volatile oil from the leaves of Engelharditia roxburghiana . Method: The volatile oil was extracted from leaves of E. roxburghiana by steam distillation

the amount of the components from the volatile oil was separated and identified by GC-MS

and the relative content of each component was calculated by area normalization method. Result: Fifty five compounds were separated by GC and 33 of them were identified

which accounted for 95% of volatile oil. The major components were hexadecanoic acid (44.73%)

phytol (14.71%)

9

12

15-octadecatriena (12.24%) et al. Conclusion: The analysis results can provide evidence for quality control and further exploitation of leaves of E. roxburghiana .