[Objective] The research aimed to study the extraction of essential oil from Sabina vulgaris Ant.leaves and thin tress by steam distillation.[Method] The effects of raw material stave degree,distilling time,adding water,NaCl and soaking time on the extraction rate of Sabina vulgaris Ant.leaves and thin tress were studied.And the extraction technological conditions of essential oil from Sabina vulgaris Ant.leaves and thin tress were optimized by the orthogonal test.[Result] The optimum extraction technologic...