Abstract: This paper introduces the general situations of reservoirs and river basins,as well as the historical flood dispatching situation. Based on current situations,an analysis of the flood dispatching of Niululing Reservoir based on the meteorological rainfall and real-time rainstorm of super typhoon "Sarika" No.201621 is provided. The meteorological-hydrological-hydraulic coupling technology is initially adopted to forecast the flood,to analyze the flood risk in the lower reaches of Niululing Reservoir and to make flood control decisions. It improves the accuracy of reservoir flood forecasting,prolong the forecasting period and reduce the flood disaster in the lower reaches of the reservoir.