GC/MS was carried out to analyze the volatile components in essential oil of Flos Sophorae Immaturus by using the simultaneous distillation extraction method(SDE) and water steam distillation method(WSD).The results showed that 52 compounds were separated from essential oil,43 compounds were identified by SDE and they accounted for 98.49% of the total peak areas.But only 41 compounds were separated from essential oil,28 compounds were identified by WSD and they accounted for 84.53% of the total peak areas.I...