Beidu control project in the lower reaches of the Yellow river changed traditional constitution into the one, which composed of hinge bags filled with concrete to cover riverbed and slope. By calculating and analyzing the steady of the constitution quantified the depth of scour is 9.0meters, the width of the constitution is 18.0meters,therein the length of immobile is 4.0 meters. The application for the new material and new constitution can adopt the scored transfiguration in channel. It can be less damaged or not damaged, and will be release the burden of resisting the flood. The projects will impulsion the new material applied in the Yellow river.