Fuente: WIPO "essential oil or extracts" The present invention discloses a method for extracting litseacubeba essential oil by rapid flash evaporation, the steps of which are as follows: wash litseacubeba fruits, soak fruits in a saline solution with a mass concentration of 2%~5% for 30~90 min, then put fruits into a distillation kettle, close the inlet of the distillation kettle, boil and distill with pressurized steam at 0.1~0.5 MPa for 2~15 min under this pressure, quickly open a valve to a condenser after distillation, make the essential oil steam enter into an oil separator after condensation, and finally collect litseacubeba essential oil. This method has shorter process time (20~40min), lower stream consumption, reduced production energy consumption, enhanced yield of distilled essential oil and lower production and extraction cost of litseacubeba essential oil compared with the existing steam distillation method for extracting litseacubeba essential oil.