The traditional method for route selection is a time-consuming, troublesome and boring task. So we should consider how to make computers select the power line path. For this purpose, this paper designed a layered model, based on which a method was proposed for power line routing. Experiments were carried out using this method to choose two power line paths. The feasibility of this method was proved with the comparison of line paths picked to the existing line that won the bidding in the same region. And the comparison between this method and Dijkstra method was investigated to validate its advantage in calculation speed.