After the 175 m trial impoundment of the Three Gorges Reservoir,cumulative siltation occurred in Shangluoqi reach in Three Gorges Reservoir area,with a small amount and mainly in the deep channel and beach.Since channel scale margin of Shangluoqi reach in the fluctuating period is not large,a little amount of sediment deposition can worsen the channel conditions.This paper analyzes channel condition changes of Shangluoqi reach during 2011—2012 using measured terrain data,and puts forward the maintenance dredging scheme of Shangluoqi reach in the falling stage of the Three Gorges Reservoir.