Abstract:The reinforced soil structure is promoted worldwide due to its advantages of adapting to local conditions, superior performance, energy saving and carbon reduction. However, the reinforced soil structure built in seasonal frozen soil area will experience multiple freeze-thaw cycles in the whole life, and the research on the performance of reinforced soil structures influenced by freeze-thaw cycles is still insufficient. The results of investigations into the effect of freeze-thaw cycles on the reinforced materials, backfill and reinforced soil unit are presented, and the research results of performance changes of reinforced soil structures under freeze-thaw cycles are summarized from three aspects: laboratory test, field monitoring and numerical simulation, combined with practical cases. The inadequacy of the existing studies on the mechanism and evaluation index of freeze-thaw cycles on reinforced soil structure are pointed out, and the perspective on the evolution of this research area is proposed, which provides support for the design and long-term stability analysis of reinforced soil structures.