The cure kinetics of diglycidyl ether of bisphenol A(DGEBA)/4,4'-methylene dianiline(MDA)/phenyl glycidyl ether(PGE)-acetamide(AcAm) system was studied. An epoxide group of PGE reacted with an amine group of AcAm and formed a hydroxyl group which was acted as a catalyst on the cure reaction of other epoxide and amino groups. Therefore, the cure rate became fast and activation energy was lowered by the addition of PGE-AcAm.