The technological process of β-cyclodextrin inclusion compound of volatile oil in Xiangsha Yangwei Preparation was studied by orthogonal experiment design.The optimum preparation condition was a proportion of 1∶8(ml:g) for oil to β-cyclodextrin,stirring for 1 hour at 55℃.Then the characters of volatile oil before and after being included were analyzed by GC-MS.It is indicated that β_cyclodextrin inclusion compound can more effectively protect the active components of volatile oil.