In view of the rare phenomenon of “anti-dry in flood season” in the Yangtze River Basin during the flood season of 2022,based on the measured water and sediment data and the water level observation data of the fluctuating backwater area of the Three Gorges Reservoir,combined with the water level in front of the Three Gorges Dam and the discharge data of Xiangjiaba,the characteristics of the channel conditions in the Three Gorges Reservoir area from 2022 to 2023 are analyzed.The results show that the water level in front of the Three Gorges Dam continues to be low (155-160 m) for a long time from the flood season of 2022 to the flood season of 2023.During the period of increasing the discharge of Xiangjiaba,the actual channel maintenance depth in the fluctuating backwater area is greater than the planned water depth,and the water depth decreases during the period of reducing the discharge.There are even cases where the planned maintenance scale is not reached.It is suggested to carry out in-depth research on the joint operation of river basin water projects in dry season.According to the real-time water and rainfall information and the operation of the Three Gorges Reservoir,when the water level in front of the Three Gorges Dam is low ( below 160 m ),the joint operation of river basin water projects should be scientifically refined to further give full play to the channel benefits of water conservancy projects to cope with the drought in the river basin.