Abstract: Bis-oxiranylmethyl ester of acrylic adduct of levopimaric acid (2) was prepared by acrylic adduct of levopimaric acid (1) with epichlorohydrin in the presence of phase-transfer catalyst.The structure and properties of 2 were studied.Following the same procedure,a new epoxy resin (3) based on 2 was synthesized by (reaction) of acrylic modified rosin with epichlorohydrin.Curing reactions of epoxy resin 3 with amine,polyamide and anhydride and (properties) of the cured products were investigated.Results of the experiments showed that epoxy resin 3 has the (corresponding) properties as E- 44 epoxy resin.