The Tongtiancao beach regulation is a key project for the regulation of the Wu River waterway.The completion of the Baima Hub on the Wu River will improve the navigability of the waterway,but the rising water level will cause some of the existing river barriers and shoals to become reefs and obstruct navigation.For the channel of Tongtiancao Beach,there are problems such as rapid local water flow,poor flow pattern,and serious water sweeping bends,this paper adopts the river model test to study the navigational current conditions of the designed regulation plan.The results show that although the waterway regulation scheme has improved the navigational flow conditions,which makes the channel of Tongtiancao Beach basically meet the scale requirements after the completion of Baima Hub,but its dredging design does not follow the river situation,which makes the direction of the channel and the intersection of mid-water current power axis larger,which is not conducive to the receding scouring and navigation channel stability.In view of the shortcomings of the designed remediation scheme,and considering the project investment and construction difficulty,the optimisation measures more suitable for this channel remediation project are proposed.The research results can provide scientific basis and technical support for similar waterway regulation projects.