The invention belongs to the field of power distribution network planning, and particularly relates to a gridding power distribution network planning method. Aiming at the problems of partial circuitcircuitous power supply, complex circuit connection transfer and circuit power supply load crossing of the existing power grid, the invention provides the following scheme that the method comprises the following steps: S1, collecting the current power distribution network operation distribution condition of a planning place, and comprehensively analyzing the collected data to determine the problems of the current power distribution network; S2, proposing a solution according to the problems of the current power grid, and planning a preliminary framework; and S3, evaluating the planned preliminary framework, and generating an evaluation report. The evaluation report formed by the preliminary framework is compared with the modified evaluation report, so that an optimal scheme can be obtained, the rationality of power distribution network planning is ensured, and the problems of circuit circuitous power supply, complex circuit connection transfer and circuit power supply load crossing areavoided.