The visualization and simulation of navigation-power junction reach is based on the digital elevation model construction theory and the parameterized solid modeling theory.The GIS three-dimensional visualization technology is applied in the methods of the digital terrain system construction in navigation-power junction reach,3D scene establishment and system model coupling.Based on the technology of ArcGIS Engine secondary development，spatial data base and join and application of data base,the research on construction of the whole visual scene virtual reality system is conducted.The whole visual scene dynamic visual system of Yilan navigation-power junction is constructed by the methods.Thereupon,the whole visual scene dynamic management of navigation-power junction reach is available.The practicability of the methods is authenticated.