Abstract: In recent years, the management of power cable and channel has been transformed into 3D digital real scene simulation management. The modeling and rendering technology of large power data is required. Modification in view of the low efficiency existing in the existing cable and channel and automatic modeling technology, the disadvantage of difficult and slow to load, the model parameter specification, using the unit model, curve automatic modeling, octree with LOD technology, a tubular object precision modeling technology modeling, rendering, load, improve the efficiency of modeling and loading speed, and realize the function of the circuit model editing and route planning.