Abstract: The volat ile oil was extracted from pomelo leaf with supercrit ical Carbon dioxide.The results showed that the optimum conditions for the extraction are: extract ion pressure 12. 0~ 15. 0Mpa, extraction temperature 35. 0~ 55. 0 ?? ,extraction time 1. 0~ 1. 5 h, carbon dioxide fluid rate 20. 0~ 30. 0 L??h.The volatile oil extracted has pure fragrance and is of high quality.

Key words: supercritical carbon dioxide, pomelo leaf, volatile oil