Abstract: The joint operation of flood control and peak shifting of four large reservoirs on the upper reaches of Fenghua River in Yongjiang River is studied.Based on the existing single reservoir flood control compensation operation rules, the main factors of reservoir flood control operation are analyzed in order to improve the flood control and drainage efficiency on both sides of Fenghua River.Based on the reasonable using of hydrological compensation and storage compensation capacity of four large reservoirs on the upper reaches of Fenghua River, the upper limit water level of peak shifting flood discharge of each reservoir is put forward.The joint regulation rules for peak shifting flood control of reservoirs are studied and formulated, and the flood control effect is analyzed. The research results provide technical support for the flood regulation scheme of Yongjiang River Basin, and provide reference for the study of flood control joint operation of reservoirs in other similar basins.