Abstract: The research established a method to detect the content of 3 of flavonoids of Taraxacum mongolicum. Further more,discussed the effect of different habitats on the flavonoids content in T.mongolicum. The separation was performed on Iinertsil ODS-SP column (150 mm×4.6,5 μm).The column temperature was 30 ℃.The flow rate was 1.0 mL /min.The injection volume was 10μL.Isocratic elution.The content of three kinds of flavonoids (rutin,luteolin and quercetin) of the whole plant of T.mongolicum in the xeric environment were higher than the wet.In two habitats,rutin content of leaves and flowers of xeric was higher than the wet,and luteolin content of flowers of xeric was more than the wet,but there is no significant differences among other organs.Quercetin content of different xeric organs,except the scape,was higher compare to the wet one.In the same habitats,the rutin content of leaves was the most among different organs,but the content of luteolin and quercetin of flowers were higher than others.

Key words: Taraxacum mongolicum, HPLC, Flavonoids, Xeric cultivation, Wet cultivation