The invention relates to a power grid private network layout construction method, and solves the defects of the prior rat. The technical scheme includes the steps of 1. obtaining a regional map, base station alternative sites and terminal information of a target place; 2. performing gridding processing on the regional map; 3. obtaining all standard-reaching base station combinations; 4. calculating the flow densities of all grids in the regional map; 5. performing transmissibility ranking on the all the standard-reaching base station combinations; and 6. selecting and using the highest ranked base station combination to perform base station construction. Terminal equipment which generates much data is configured nearby the base station as far as possible, so that distance between the base station and the terminal equipment is reduced, rain attenuation or other journey loss is reduced, at the same time, the appropriate base station is selected for the equipment terminal, too many high-rises or similar high buildings are prevented from existing between the base station and the terminal as far as possible, obstruction caused by the high-rises or similar high buildings to radiation waves is prevented, and thus an effect of improving data transmission reliability is achieved.