Abstract: Allspice as the raw materials,process optimization through single factor and orthogonal experiments,research subcritical extraction process allspice. In the oil index was investigated to determine the subcritical extraction allspice best extraction conditions and parameters: raw materials grinding degree 40 mesh,extraction temperature 60 ℃,extraction times 4 times,extraction time 60 min,allspice oil yield up 4.58 percent.