目的：对沙芥的化学成分进行研究。方法：采用硅胶柱层析和薄层层析进行分离，运用红外光谱、质谱、核磁共振谱以及与标准品对照的方法鉴定化合物的结构。结果：分离鉴定了１１个化合物，分别为豆甾５烯３β，７β二醇（Ⅰ），豆甾５烯３β，７α二醇（Ⅱ），２４亚甲基香蕉甾醇（Ⅲ），β谷甾醇（Ⅳ），胡萝卜苷（Ⅴ），羽扇豆醇（Ⅵ），甘油α亚油酸酯（Ⅶ），亚油酸（Ⅷ），对羟基苯甲酸（Ⅸ），β吲哚醛（Ⅹ），二十八醇（Ⅺ）。结论：１１个化合物均为首次从该植物中分离得到。 Objective: To study the chemical constituents of canola. Methods: The compounds were isolated by silica gel column chromatography and TLC. The structures of compounds were identified by IR, MS and 1H NMR spectra and comparison with standard samples. Results: Eleven compounds were isolated and identified, which were stibol5ene3β, 7βdiol (Ⅰ), stigma5ene3β, 7αdiol (Ⅱ), 24methylene Β-sitosterol (Ⅳ), daucosterol (Ⅴ), lupine alcohol (Ⅵ), glycerol α-linoleate (Ⅶ), linoleic acid (Ⅸ), β-indole aldehyde (Ⅹ), octacosanol (Ⅺ). Conclusion: All the 11 compounds were isolated from this plant for the first time.