Aiming at the shallow water,steep slope and torrent flow of Lujiahe waterway,we probe into the train of thought on the waterway regulation.Adopting the three-dimensional numerical analysis model,we analyze the flow features and propose a preliminary plan for regulating this waterway.The research results reveal that dredging is the effective method to solve the navigation channel problem,and the research achievement may serve as reference for regulation of the pebble shoal which is characterized by shallow water,torrent flow and steep slope.