Abstract: In recent years, Yancheng City has experienced "three droughts in five years", with an increasing frequency of seasonal droughts. To deeply analyze the characteristics of drought in Yancheng City and better support regional drought response efforts, this paper selects the summer drought process in 2024 and analyzes the causes of this drought from different perspectives, including precipitation, upstream water inflow, local water use, and regional water conservancy project dispatching. At the same time, it combines the water supply safety guarantee level of water sources and the agricultural water use level with a 75% guarantee rate in various irrigation (reclamation) areas, and comprehensively analyzes the impact of this drought on water supply, irrigation, navigation, and aquatic ecology using the guarantee rate frequency method and wet perimeter method. A comprehensive summary and analysis of this drought process lays the foundation for the construction of a regional drought response mechanism.