目的:分析桂郁金茎叶、生品与炮制品的挥发油化学成分。方法:用水蒸气蒸馏法提取挥发油后采用气相色谱-质谱联用法(GC-MS)分析。结果:从桂郁金茎叶中分离得到57个化学成分,鉴定了37个;桂郁金生品中分离出45个化学成分,鉴定了22个;从桂郁金炮制品中分离出44个化学成分,鉴定了32个。结论:3个样品挥发油的成分及含量均存在较大差异。 OBJECTIVE: To analyze the chemical constituents of volatile oil from leaves, raw materials and processed products of GuiYu golden stem. Methods: Gas chromatography-mass spectrometry (GC-MS) was used to analyze the volatile oil extracted by steam distillation. Results: Fifty-seven chemical constituents were isolated from the leaves of Caragana microphylla and 37 were identified. Forty-five chemical constituents were isolated from Caragana korshinskii and 22 were identified. Forty-four chemical constituents , 32 were identified. Conclusion: There are big differences in the composition and content of volatile oil in three samples.