Abstract: To investigate effect of strain rate on chemical adhesion force and friction on the bonding interface between carbon fiber-reinforced polymer (CFRP) bars and ultra-high performance concrete (UHPC) under impact load, both static pull-out tests and longitudinal impact tests with the 4.0 s⁻¹ strain rate were conducted on UHPC-filled anchorage for CFRP smooth bars. Totally, 24 specimens for eight test groups with 20d-35d (d is CFRP bars diameter) embedded lengths were prepared. The results show that both static and longitudinal impact specimens fail in a similar pattern, that is, all CFRP bars slide out UHPC regardless of the embedded lengths and load types. However, the damage on the surface of CFRP bar is slightly severer in static tests than in impact tests. Under the impact, the chemical bond strength at the bonding interface between CFRP smooth bar and UHPC increases, thereby leading to an improved peak bond strength; however, the residual bonding strength (i.e., friction) at the bond interface decreases. Compared with the corresponding static test specimens, the chemical bond strength and peak bond strength approximately increase by 53% and 17%, respectively, while the average residual bonding strength decreases by about 38%. Besides, a prediction formula for predicting the dynamic bonding strength between CFRP smooth bar and UHPC under impact loads was established.