In view of the recent problems in the upper shallow area of Zhangjiazhou waterway,a two-dimensional water and sand mathematical model is established based on the newly measured topography of Zhangjiazhou waterway.Using this model,the simulation analysis of water flow and channel conditions of the 6 m depth waterway regulation project is carried out.The results show that after the implementation of the project,the channel reaches the goal of achieving stable beach developments and protecting the channel and increasing the width of the navigation channel in the shallow area of Nangang,and can meet the target channel scale of 6 m×200 m.