Abstract: As a new structural material,fiber reinforced plastics(FRP) features light weight,high strength,corrosion resistance,etc.,and has a bright future when used for a new type of prestressing tendon in engineering structures.The pseudo-static test on four concrete beams under low reversed cyclic loading is introduced in this paper.Based on the characteristic of measured hysteresis curves of concrete beams prestressed with FRP tendons,a new moment-curvature hysteresis model is proposed,which agrees well with experimental curves.