Subcritical fluid extraction technology was used to collect the extract of Ficus hirta, and the volatile oil was obtained by molecular distillation. The chemical composition of the volatile oil was characterized by gas chromatography-mass spectrometry (GC-MS), and the relative content of each component in the volatile oil was obtained by GC-MS peak area normalization analysis. Subcritical extraction technology combined with molecular distillation method is not only can be very good in the preparation of volatile oil Ficus hirta, but also can preserved its rich fragrance; Ficus hirta volatile oil identified a total of 29 kinds of substances, of which the higher levels of components of caproic acid, pelargonic acid, psoralen, caprylic acid. This method is simple and feasible, what's more, it can be used to prepare the composition of the volatile oil from Ficus hirta preliminary identification.