Hydraulic flashboard permeable spur dike is a new kind of spur dike.the paper conducted the moving bed model test by taking the three kinds of spur dike group such as types of hydraulic permeable flashboard,well column pile permeable and entity as research object.It surveyed the terrain by arrow and used surfer 8.0 to draw topographic map near dikes.The result indicated that the cumulative effect of reducing local scour by hydraulic flashboard permeable spur dike is the best,and in turn is permeable pile spur dike.The performance of entity spur dike is the worst. Finally,the paper detailedly analyzed the differencial mechanism of reducing the local scour of spur dikes group.