Abstract: The actuality of navigation structures layout is summarized in this paper;and some regulations of lock layout in the hinge are explained.The comprehensive analysis of boundary water flow and navigation condition is done.The results indicate: the advantage of being located along concave bank is more than that along convex bank;when the approach channel entrance area of the lock is located along the bend channel,joint action of oblique flow and bend channel flow will occur and the difficulty in ship(team) entering or going out of the entrance is increased;when connecting section is located along the bend channel,shipping rudder opermion is more difficult than straight channel when the ship(team) is under the actions of the bend channel flow,navigation line and the axis of ship team.Some relations,such as the relation between turning radius and rudder angle of ship(team),and the relation between stroke and relevant factors,should be studied.