[Objective] Comparison of volatile oil in the roots and stems of P.sibiricum was proceeded in this research.[Method] Steam distillation extraction followed by GC-MS combined with quantification by peak area normalization method was used to analyze volatile compounds in the roots and stems of P.sibiricum.[Result] The results showed that 26 compounds were identified;accounting for 90.87% of the total volatile compounds from the roots of P.sibiricum,and 37 compounds were identified,accounting for 94.58% of the...