The invention belongs to the technical field of distillation extraction, and particularly relates to a distillation extraction system of wormwood essential oil, which comprises a distiller, a communicating pipe, a cooler and a separator, the distiller is used for distilling wormwood; the communicating pipe is used for conveying wormwood essential oil contained in the volatilized water vapor; and through the arrangement of a filter cylinder, the filter cylinder can block wormwood residues, the residues obtained after wormwood is crushed are prevented from falling to the base, scaling of the base is reduced, the labor intensity of workers is reduced, the heat transfer efficiency is improved, the wormwood distillation efficiency is improved, a driving motor is matched with the filter cylinder, on one hand, water is accelerated to immerse wormwood, so that the wormwood soaking speed is increased, and the breaking of wormwood cells is accelerated, on the other hand, in the process of distilling the wormwood, water flows in the machine body, so that the water vaporization speed is increased, the water vapor is accelerated to drive essential oil in water to be separated, and the extraction speed of the distiller is increased.