Abstract: This paper investigated the bonding behavior of fiber reinforced polymer (FRP) bars in sulphoaluminate cement (SAC) concrete under cyclic loading. The effects of FRP bar surface morphology, fiber type, bar diameter, and concrete strength and type on bond performance were analyzed. The results show that the bond stress – slip (τ – s) hysteretic curves under cyclic load were generally symmetric about the origin. The skeleton curve had a trend consistent with the monotonic curves. The cyclic load would lead to degradation of bond strength. The surface morphology of the FRP bars significantly affected the bond strength, which can be improved by ribbed, sand-coating and twine treatments. When the SAC concrete strength increased from C30 to C50 and C65, the bond strength under cyclic load increased by 66.9% and 167.2%, respectively. Finally, the calculation model of τ – s curve under cyclic load was proposed, which was good agreement with the test curve.