The Yangtze River estuary faces challenges due to changes in water flow, silt conditions, and riverbed topography. These changes are influenced by urbanization and the interaction of runoff, tides, floods, and seawater. The goal is to develop a strategy for controlling and developing the estuary sustainably. The researchers focus on understanding the complex flow fields and terrain changes to address the unstable conditions. The key findings emphasize the need for careful planning to manage the water and soil resources effectively in the Yangtze River estuary.