In view of the characteristics of the dynamic management for the navigation-power junction construction,we build the DEM and 3D hydraulic structures of the navigation-power junction and propose a fusion method of 3D scene based on the construction principle of digital topographic map(DEM) and applying “CityEngine” technology.Then,on the basis of the spatial database technology of ArcSDE and SQL Server,we realize the connection of the attribute data and spatial data by taking the advantage of the internal code and the user identification code as the common data item,establish the 3D scene dynamic display method to accomplish 3D dynamic visual simulation for the construction process of navigation-power junction,and design the 3D dynamic display of engineering construction and information synchronization update mechanism for the construction process to achieve dynamic visual management of the navigation-power junction construction.Finally,based on the established systemic functional framework and taking the construction management of Yilan navigation-power junction for example,we develop a 3D visual management system of the dynamic construction,expecting to provide a technical support for the visualization and delicacy management of the navigation-power junction construction.