In view of the problem that the Huoyanqi Beach in the upper reach of the Yangtze River is prone to being shallow and obstructs navigation,and the water depth in the navigation channel does not meet the planning requirements,we propose two different regulation plans.We use the unstructured grid to build a planar two-dimensional flow mathematical model of the engineering river section,apply the measured hydrological data of the prototype to verify the reliability of the model,and calculate the main parameters such as water level,flow field,and beach dissipation criterion of the two plans under different working conditions.The results show that the two plans can achieve the expected regulation goals.However,the regulation building layout plan of extending the Huoyanqi dam and building three new spur dams requires a large amount of work and blocks the possible of subsequent adjustment of the navigation channel in the beach section.By extending the plan of connecting the dam head to the shore,the amount of engineering work is greatly reduced,and it also leaves space for subsequent adjustments to the channel in the beach section.