This study addresses gaps in understanding cyclic bond behavior of fiber reinforced polymer (FRP) bars. By analyzing carbon fiber reinforced polymer (CFRP), glass fiber reinforced polymer (GFRP), and basalt fiber reinforced polymer (BFRP) bars under reversed cyclic loading, it quantifies how bar diameter, embedment length, concrete strength, and rib geometry govern initial stiffness, unloading strength, friction resistance, and energy dissipation. A unified bond stress-slip constitutive model and hysteresis framework are established, elucidating interfacial degradation mechanisms and providing critical insights for optimizing seismic-resistant FRP-concrete structural design.