Taipingkou waterway is a key obstructed channel in the middle reaches of the Yangtze River.Maintenance dredging technology is used as the main way to ensure the waterway unobstructed at present.Based on that the obstructed navigation of Taipingkou waterway is serious in 2018,we analyze the characteristics of waterway and reason of obstructed navigation,and put forward the dredging scheme.The results show that according to various reasons of obstructed navigation,the dredging thinking should be used at current period,which is combined with bridge collision avoidance,waterway management and dredging,prediction in advance and multi-round rush dredging,alternating dredging and navigation with double channels,and dredging riverbank channel and 2# channel.Considering the serious obstructed navigation situation in 2018,the selection of dredging time should be combined with water regime,and it should carry on multiple dredging respectively in pre-flood season,flood season and dry season.