Abstract: Reasonable flood limit water level can coordinate the contradiction between flood control and benefit, and produce double benefits of flood control and benefit. The flood limit water level and scheduling procedures of Fushui Reservoir have been in use since 1996, so it is necessary to study the flood limit water level of Fushui Reservoir. In this paper, according to the flood control needs of the basin under the new situation, different adjustment schemes of the flood limit water level of the Fushui Reservoir are formulated. The regulation and storage of the Fushui Reservoir and the evolution of downstream floods are simulated and calculated, and the flood control benefits and water storage benefits of each dispatch scheme are counted and compared. Finally, it is proved that the research method of flood-limited water level adopted in this paper is suitable for the study of flood-limited water level of reservoirs with important flood control tasks downstream.