本文以韧性较高的４，４′－氨基二苯甲烷双马来酰亚胺／３，３′－二烯丙基双酚Ａ共聚双马树脂（ＢＭＩ／ＤＰ）作为研究对象，探讨用刚性热塑性树脂ＰＥＫ－Ｃ共混的方法以进一步提高树脂韧性。结果表明，少量的ＰＥＫ－Ｃ能提高ＢＭＩ／ＤＰ树脂韧性，７．９％的ＰＥＫ－Ｃ使树脂ＧＩＣ由２１４Ｊ／ｍ２提高到４０４Ｊ／ｍ２。含活性端基ＰＥＫ－Ｃ和不同分子量的ＰＥＫ－Ｃ对树脂性能产生一定的影响。随ＰＥＫ－Ｃ用量的增加，共混树脂呈两种不同形式的球粒结构。 In this paper, the toughness of 4,4′-aminodiphenylmethane bismaleimide/3,3′-diallyl bisphenol A co-bismaleimide resin (BMI/DP) is studied as a research object, and the rigidity is discussed. The method of blending the thermoplastic resin PEK-C to further increase the toughness of the resin. The results show that a small amount of PEK-C can improve the toughness of BMI/DP resin, 7.9% of PEK-C increases the resin GIC from 214J/m2 to 404J/m2. PEK-C with active end groups and PEK-C with different molecular weight have a certain influence on the properties of the resin. With the increase of the amount of PEK-C, the blended resin is in two different forms of spherulites.