The invention discloses a medium-
voltage power distribution network accurate-planting method based on three 
layers of macroscopic networking constraints. The medium-
voltage power distribution networkaccurate-planting method comprises the following steps of accurate diagnosis of a power distribution network, accurate load prediction, supply zone classification and division in a planned area, 
transformer substation optimization and planning in the planned area, three 
layers of macroscopic networking constraining including channel networking, 
grid networking and main 
transformer networking and embodying top layer definitiveness of overall networking and the overall relevance of grid racks, establishment of target grid racks based on the networking constraints and distance 
harmonization of the grid racks. Interstation channel networking based on 
fertility layout, grid flakiness networking based on nearby contact optimization and overall main-
transformer networking based on device 
utilization rate optimization can be achieved through spatial overall planning and are used as constraints to strengthen the top layer definitiveness of planning results and whole 
harmonization. Planned target guidance and used equipment utilization principles are strengthened through time length 
harmonization. The 
operability, scientificity and accuracy of planned schemes are improved.