The Yinchuan reach of the Yellow River is a typical wandering plain river. Its bed material is fine sand，which is easy to be washed and silt. The wading facilities are prone to change the sediment movement law of the sandy riverbed，cause unpredictable scouring and silting evolution of the riverbed terrain，and result in the turbulence of the water flow pattern，which is not conducive to ships passing through the reach in the bridge area. As a result，it increases the risk of navigation obstacles and the difficulty of regulation. Based on the analysis of riverbed evolution，this paper uses numerical simulation technology to analyze the water flow pattern and included angle of the reach in the sediment-laden bridge area under representative flows，the water blocking rate of wading buildings，and other parameters. In addition，the paper studies the channel regulation technology of the reach in the bridge area，which considers not only its impact on flood discharge and channel solidification but also navigation channel regulation and flood discharge. The results show that this channel regulation technology has combined navigation channel regulation，flood discharge，and bridge construction，and it can not only satisfy the navigation conditions of the channel but also meet the flood discharge requirements，which is conducive to ship navigation and bridge construction.