Abstract: Turpentine is a natural product of pine and a kind of important fine chemical material. Polymeric microsphere can act as micro-reactor or the carrier of medicament or essence, etc, receiving great research interest recently. In this paper, the steady monodispersed nanometric styrene monomer droplets containing turpentine were prepared by ultrasonic dispersion method. Then polymerization was carried out in the presence of oil-dissolved initiator and the turpentine-polystyrene hybrid particles were prepared. Phase separation between polystyrene and turpentine was occurred, the polymeric particles with the structure of polystyrene as shell and turpentine as core were produced during polymerization. The core-shell structure was confirmed by transmission electronic microscopy and GC-MS analysis.