Based on the analysis of the navigation obstruction and the tendency of channel change in downstream Yangtze River,we put forward the regulation ideas and give the recommended channel regulation scheme according to the results of model experiments,which bears satisfactory effect in improving the channel condition of Luochenzhou left branch’s shallow area and the channels in Manyusha reach,while the area near the left of Sanyiqiao and Gaogang shoals need dredging regulation because the necessary width is slightly smaller.