Abstract: Taohuajiang shiplock aims at tourist travel.It is hard to satisfy the national navigation norm due to being subjected to restriction of the geography and river flood control.A 1∶25 hydraulic model is adopted for the research.The research results show that the control condition of two shiplocks is the highest navigable stage.At this time,the flow velocity is large,especially the horizontal current velocity near the entrance area of the approach channel.It dissatisfies the norm requiremnts for ships and brings about an insecurity factor.The modified scheme is to decrease the angle between the upstream and downstream approach channels and Taohuajiang main course,and to dredge the entrance of the approach channel of the shiplock.Experiment results of the modified scheme show that horizontal current velocities near the upper entrance areas of the two shiplocks has been improved substantially.