To study interfacial behavior of concrete structures strengthened with fiber reinforced polymer(FRP)subjected to the freeze-thaw cycling, this study presents experimental investigations on the degradation behavior of FRP laminate-to-concrete interfacial bond performance under combined effects of freeze-thaw cycling and sustained loading with double-lap shear tests. After being exposed up to 200 freeze-thaw cycles, the specimens were tested to failure monotonously. Digital image correlation method was employed to capture the full-field displacement of the specimen during loading. Interfacial bond stress-slip relationship was determined based on the analysis of full-field data. Test parameters included the freeze-thaw cycles, sustained loading and concrete types. Test results show that the freeze-thaw cycling leads to significant decreases in all interfacial parameters. The bond stress-slip relationship is also degenerated with freeze-thaw cycles seriously. When considering the sustained loading, additional interfacial degradations were observed after freeze-thaw cycling. Apparent changes of interfacial failure modes were also observed during tests.