Methods: The volatile oils of the leaf and stem of leptopus chinensis (bunge) pojark were obtained by steam distillation, and the constituents were tested by GC-MS.

• 方法：应用水蒸汽蒸馏法分别提取雀儿舌头叶和茎的挥发性成分，并采用气相色谱与质谱联用(GC-MS)法对其化学成分进行分析。