Power distribution network planning investment distribution method and system

The invention relates to the technical field of data processing, in particular to a power distribution network planning investment distribution method and system which are high in processing speed, high in efficiency and accurate in distribution. The system is provided with an investment distribution processing unit, an investment region-based distribution unit, an investment voltage grade-based distribution processing unit, a region fund summarizing unit, a comparison and analysis unit, a qualitative sorting unit, a quantitative sorting unit and a project library, wherein the investment distribution processing unit divides a total fund tray into four funds according to an expert assignment method; the investment region-by-region distribution unit distributes each fund to each region according to a second-level index and a distribution principle; the distribution result is scientific and reasonable, the quantitative estimation result is matched with the actual demand, and the method has the remarkable advanta