Abstract: The kinetics of the curing reaction of epoxy/cyanate ester was studied by DSC.The activity energy,reaction order and frequency factor of the curing reaction of the epoxy and cyanate ester catalyzed by five catalysts were obtained.The results show that the activity energies of the cross-linking reaction are all decreased with the addition of the catalysts.Wherein the activity energy is decreased 30% with acetyl acetonate of copper,and the reaction order is 2;the activity energies are also decline more than 15% by(tetrebutyl) titanate,dibutyl tin dilaurate and acetyl acetonate of cobalt.The cross-linking temperature is(decreased) biggishly by dibutyl tin dilaurate and acetyl acetonate of cobalt.The reaction orders of the curing reaction with catalyst-free and catalyzed by tetrebutyl titanate,dibutyl tin dilaurate are the 1st order(respectively).The curing reaction catalyzed by the tetrebutyl titanate is occurred simultaneously in one-step,and the reaction with catalyst-free and catalyzed by the other catalysts is cross arisesed in two-step.