The invention relates to an energy storage planning method suitable for a distribution network. The energy storage planning method suitable for a distribution network comprehensively considers the installation cost, the maintenance operation cost and the operation years to calculate the uniform annual value cost of operation of an energy storage device, comprehensively considers the total energy consumption and energy storage capacity to calculate the energy utilization rate of the energy storage device, and performs energy storage planning on the distribution network by taking the minimum uniform annual value cost and the maximum energy utilization rate as the indicators. The energy storage planning method suitable for a distribution network has important reference value for the researchon distribution network energy storage device planning and engineering design of the distribution network.