Hujiatan beach becomes the upper reach of the fluctuating backwater area after the Three Gorges reservoir’s running with 175 m water level，and the period of river bed evolution changes a lot and becomes shorter.During study of the regulation engineering scheme，the 2.5 m and 3 m spur dike head levels are demonstrated in order to take full advantage of the scouring ability of different flow.A new stepped dam of 2.5 m and 3 m head level is the recommended.The physical model test results show that the new dredged channel can be maintained and keep reasonable indicators on the beach after the program is implemented.