Abstract: In order to fully understand the causes of the rainstorm and flood of Moyang River in January 2016,combined with the background conditions of the climate change and the rare storm flood in winter,based on the analysis of flood distribution,the consistency of the measured hydrological series of Shuangjie hydrological station was tested by dividing the flood stages,and the design flood and typical flood standards in the dry season were calculated. The analysis results provide a technical basis for the Shuangjie Barrage to effectively respond to the extreme climate in the dry season,improve the construction and operation of the project,and provide a reliable reference method for flood analysis in the dry season.