Abstract: In this paper,the PU/EP compound material has been prepared with the method of the situ-polymerization.And the influence of different factors has been examined on the properties of the PU/EP compound material.The results show that when the amount of polyurethane was lower,the resistance to impact strength,tensile strength and thermal stability were better.But when the amount of polyurethane exceeds a certain scope,the tensile strength decreases with the increase of impact strength.By comparing the solidification effects among four kinds of curing agents which are polyamide,imidazole,triethamine,trithlenediamine,the results show that the polyamide's solidification effects is best,the mechanics properties are not good after being modified by using triethylamine as solidification agent and the triethlenediamine can't completely solidify the compound material.The strong tenacity PU/EP compound materials whose ensile strength and impact strength are 54.6MPa and 12.025KJ·m^-2 respectively have been prepared.