The invention discloses a method and system for obtaining the shortest path between a power utilization address and access point equipment. The method includes the steps that a starting point road and an end point road are obtained with the access point equipment as the starting point and the power utilization address as the end point in a road center line network of a digital map; the starting point road is the road which is nearest to the starting point, and the end point road is the road nearest to the end point; a starting node and an ending node of the starting road and a starting node and an ending node of the end point road are obtained respectively; whether the starting node or the ending node of the starting point road is identical with the starting node or the ending node of the end point road is judged; if not, the shortest paths between the starting node and the ending node of the starting point road and the starting node and the ending node of the end point road are obtained respectively, and four connecting paths are generated; the shortest path between the power utilization address and the access point equipment is calculated according to the four connecting paths. The method and system conform to the practical service conditions, and a forceful supporting basis is provided for selection of service entrance construction cost estimating and power supply schemes.