The invention relates to a wave-proof guardrail structure and aims to solve the design problems of small field, high appearance requirement and short construction period of a protection project of a region beside water. The wave-proof guardrail structure has a good wave-proof effect, can be used as a guardrail, and has the advantages of small height, less occupation, wide visual width, convenient construction, short construction time, beauty and comfort. The technical scheme is that: the wave-proof guardrail structure is fixed on the top of a concrete filling pile cast in the region beside water, and comprises a fold-line type prefabricated wave-proof board at a side beside water and a steel frame at the other side for fixing the prefabricated wave-proof board. The wave-proof guardrail structure is applied hydropower, hydroelectric, water transportation and flood bank projects and other projects.