Abstract: Fatigue properties of two kinds of adhesive binders for FRP strengthened steel structure cured at different temperature，20，30，50 ，60，70 ℃ were studied under three load amplitudes; By studying the fatigue properties of the two adhesive bonders under different temperature and load amplitudes，the influences of curing temperature as well as load amplitude on the binder fatigue life were analyzed. As a result，an appropriate range of curing temperature of 30 ～ 50 ℃ was brought out，which provided a guide to engineering practice.