Abstract: Changping District of Beijing, experienced the"23·7"extremely heavy rainstorm flood process. Adopting measures such as rolling flood forecasting, precise pre discharge and joint scheduling of reservoirs, and utilization of flood storage and detention areas to minimize the loss of flood disasters.Based on this, the characteristics of rainstorm flood are analyzed, the flood control scheduling indexes of regional water conservancy projects are calculated, the experience and shortcomings of flood control operation during the"23·7"extremely heavy rainstorm flood process are systematically summarized, and the measures for future flood control and waterlogging engineering system construction, flash flood monitoring and early warning response capability, and systematic operation of hydraulic engineering are proposed, which provide important reference for regional flood prevention under the extreme rainstorm scenario.