Fuente: WIPO "essential oil or extracts" The invention relates to the technical field of negundo chastetree essential oil preparation, in particular to negundo chastetree essential oil extraction equipment and a preparation method thereof.The negundo chastetree essential oil extraction equipment comprises two sets of extraction devices and two sets of bases, and the two sets of extraction devices are located in the middles of the two sets of bases respectively; the extraction device comprises a crude oil extraction assembly and further comprises an outer shell connected with the crude oil extraction assembly, vitex plants and extraction solute are placed in an elastic extrusion body, the vitex plants and the extraction solute are crushed through cooperation of a crushing block and a hard plastic spherical shell, and therefore plant oil in the vitex plants is separated out; meanwhile, solvent water is added into the chopped vitex plants and the extraction solute to form extract liquor, and then the extract liquor is distilled to obtain the high-purity vitex essential oil, so that the problems that the efficiency is low and the yield is low when the conventional distillation equipment is used for preparing the vitex essential oil through distillation are solved.