[Object]To extract curcuma oil by different methods and analyze its components by GC-MS.[Methods] 3 extraction methods were introduced in this study,including stem distillation,supercritical CO2 and molecular distillation.[Results] The components and their contents of curcuma oil obtained by different extracting methods were basically same.The quantities of principle components were in the order of turmerone(Ar-turmerone)>α-Zingiberene>Curlone>β-sesquiphellandrene;light components before molecular distillation and the above former three curcuma oil ingredients varied wildly,α-Zingiberene,Terpinolene,β-Caryophyllene,β-sesquiphellandrene,etc components were plentiful in the light components before molecular distillation,which appeared early and could not be detected after 25.28 min.[Conclusion] The study would provide scientific introduction for the industrial production and extensive application of curcuma oil. [Object] To extract curcuma oil by different methods and analyze its components by GC-MS. [Methods] 3 extraction methods were introduced in this study, including stem distillation, supercritical CO2 and molecular distillation. [Results] The components and their contents of curcuma oil obtained by the different same methods the amount of principle components were in the order of turmerone (Ar-turmerone)> α-Zingiberene> Curlone> β-sesquiphellandrene; light components before molecular distillation and the above former three curcuma oil Ingredients varied wildly, α-Zingiberene, Terpinolene, β-Caryophyllene, β-sesquiphellandrene, etc components were plentiful in the light components before molecular distillation, which had early and could not be detected after 25.28 min. [Conclusion] The study would provide scientific introduction for the industrial production and extensive application of curcuma oil.