目的：研究蒲公英的化学成分。方法：溶剂提取和柱层析进行分离，根据化合物理化性质和光谱数据鉴定其结构。结果：分离并鉴定了２个黄酮甙，分别为槲皮素３Ｏ葡萄糖甙和槲皮素３Ｏβ半乳糖甙。结论：均首次从该种植物中分得。 Objective: To study the chemical composition of dandelion. Methods: Solvent extraction and column chromatography were used to separate the compounds. Their structures were elucidated on the basis of their physicochemical properties and spectral data. Results: Two flavonoids were isolated and identified. They were quercetin3Oglucoside and quercetin3Oβgalactose. Conclusion: All were obtained from the plant for the first time.