Abstract: After the South-North Water Transfer Project was put into operation, the management units has been exploring how to carry out joint scheduling by using the characteristics of Huairou Reservoir and Jingmi Diversion Canal Project, relieve flood pressure and improve flood prevention ability. In the process of dealing with the "23·7" basinwide catastrophic flood, the management units has effectively reduced the flood risk and improved the utilization rate of water resources through the joint scheduling of multiple water sources, multi-path cross-basin flood diversion and multi-channel resource utilization. However, there are still some problems such as low level of intelligence, few floodway passages and insufficient collaborative defense ability. Combined with the actual work, this paper sorts out the scheduling measures, analyzes the existing problems and gives relevant suggestions, which can provide reference for the flood scheduling of similar engineering.