A 2，2-bis［N-（4-propargyloxyphenyl）-3，4-dimidophenyl］ hexafluoropropane （6FDPE） was synthesized and blended with （4，4’-diphenylmethane） bismaleimide（BDM） and diallyl bisphenol A（DABPA） modified bismaleimide （BD/DABPA） resin to prepare BD/DABPA/6FDPE blend resins. The viscosity-temperature behavior and cure reactions of the blend resins of the cured blend resin， and the thermal stability and mechanical property of the cured blend resins were studied. The results show that the processing window of BDM/DABPA/6FDPE resins are broader than 70 ℃. The thermal stability of the cured blend resin increases with increase of 6FDPE content. The temperature of 5% weight loss （） and residual yield at 800 ℃ （Y_r800℃） of the cured blend resin can increase to 416°C and 41%， respectively. The impact strength can increase by 55%， to 23.9 kJ/m². However， the glass transition temperature （T_g） of the cured BDM/DABPA resin decreases with increase of 6FDPE content in the blend resin. Accordingly， the bending strength and tensile strength of the cured blend resin drop by 13%， to 132 MPa and 78 MPa， respectively.