Abstract: The analysis of rainstorm center of rainstorm flood in Fenhe River Basin is of great significance for deepening the disaster causing mechanism of rainstorm flood in the basin and flood risk management in the basin. Sixteen typical rainstorm and flood events in the Fenhe River Basin were selected, and the location of rainstorm center, rainstorm volume, and movement path with rainstorm duration of rainstorm and flood in the Fenhe River Basin were analyzed. The study found that in recent years, the flood in the middle and lower reaches of the Fenhe River Basin has been mostly manifested as floods. The rainstorm center of the basin's major floods mainly includes the Fenhe-Reservoir Zhaishang section, Taiyuan, Xiaohe and Linghuo areas. The frequency of occurrence from high to low is Linghuo area in Yitang-Chaizhuang section, Fenhe Reservoir-Zhaishang section, Taiyuan section and Xiaohe River Basin; With the passage of rainfall time, there are mainly five types of rainstorm in the Fenhe River Basin: the center is relatively fixed, upward transfer, downward transfer, and the scope is expanded and narrowed; The maximum flood peak mostly occurs in the Yitang Chaizhuang section, accounting for 13/16. However, the river channel in this section is severely silted and the flood carrying capacity is reduced. Therefore, the downstream Yitang-Chaizhuang section needs to strengthen flood control engineering supporting facilities and enhance flood control capacity. The research results can provide scientific basis for flood forecasting and early warning, optimization of flood control and disaster reduction, and rational utilization of water resources in the basin.