本文研究了采用同时蒸馏萃取法（SDE）和超临界流体萃取法（SFE）从款冬花中提取精油，再通过GC-MS手段鉴定不同精油中的主要化学成分，并比较它们的异同。结果表明，SDE法精油收率为0.13%，主要成分为小分子挥发性物质如β-没药烯、香松烯氧化物等；而SFE法精油收率在1.09%以上，其主要成分除了小分子挥发性物质外，还含有大量的较高分子量的特征成分，如款冬酮、款冬二醇等。精油提取方法的不同特性造成了款冬花精油产品在化学成分上的差异。这为工业上提取精油的工艺改善提供了重要的科学依据。

Essential oil was extracted from Tussilago Farfarae L. by the methods of simultaneous distillation extraction (SDE) and supercritical fluid extraction (SFE). The main chemical components of essential oils were determined by GC-MS and the similarities and differences between them were compared in this study. The results indicated that the yield of essential oil by SFE was higher than that by SDE. And the essential oil by SDE contained plenty volatile components with lower molecular weight, such as β-disabolene, cedrene oxide. Besides these volatile molecules, the essential oil by SFE contained some other characteristic components with higher molecular weight, such as tussilagone, faradiol and so on. The differences between these components of essential oils were caused by the function and characteristics of these two different extraction methods. All these suggested that it was important for the improvement of industrial extraction technology of essential oil.