[Analysis on the compositions of volatile oil of Alpinia henryi with GC-MS method].

To study the components of volatile oil of Alpinia henryi. The volatile oil was extracted by steam distillation method,used gaseous phase-mass spectrum combination method (GC-MS) to analyze the components of volatile oil. 58 kinds of components were isolated, among them 42 were identified and determined the relative content. This study provides a basis for the development and utilization of Alpinia henryi.