Considering the difficulty of rigid structures in adapting to local scour deformation，we study the flexible siltation-promoting structure and propose a bionic flexible siltation-promoting beach protection structure. The structure’s effect of erosion prevention and siltation promotion is investigated under different inflow conditions and arrangement modes by movable bed experiments in flumes，the result of which shows a satisfactory effect. Applying the research results to the waterway regulation project of the Hanjiang River estuary，we further test the research results by field application. The results indicate that the structure has good integrity. In addition，the engineering effect in the application area is consistent with the model test data，and thus the expected goal of beach protection and siltation promotion has been achieved. This structure enriches the siltation-promoting structure forms in waterway regulation projects with a good application prospect.