Following the management of Spartina alterniflora in the Yellow River Delta,a large area of salt marsh wetland is exposed,facing the risk of erosion and degradation of wetland area. Therefore,there is an urgent need to restore native plants to stabilize the ecosystem structure. This study utilized the Delft3D model to simulate and analyze how various native plant configurations affect tidal currents in salt marsh wetlands. The findings indicate that in plant-absent conditions,flow velocity in the study area decreases progressively from the sea towards the land. The regulation effect of plant restoration on water depth is limited,but the regulation effect on tidal current velocity is obvious. Within the plant planting area,flow velocities in scenarios involving Suaeda salsa and S. salsa+Phragmites australis are significantly reduced during neap tide and storm surge. Behind the plant planting area,plant configuration can effectively slow down the flow velocity within the range of 10-60 cm/s. In addition,based on the simulation results of four observation points,the planting mode of S.a salsa+P. australis can better regulate the tidal current than the single S. salsa planting mode. The studys' relevant conclusions offer significant practical and theoretical insights for the future restoration and protection management of wetland vegetation in the Yellow River Delta.