The invention discloses a planning method for a power distribution network wiring line. The method comprises the steps: performing the grid division of a target power distribution network region, abstracting the grids as path nodes, further determining the distances between the path nodes and the power distribution loads of the path nodes, and finally determining the optimal wiring line of the path nodes in the target power distribution network region by utilizing an ant colony algorithm according to the power distribution loads of the path nodes, the distances between the path nodes and the maximum load capacity of the line. Therefore, the method utilizes the ant colony algorithm to iteratively optimize and solve the wiring line of the plurality of nodes in the power distribution network.Due to the fact that the ant colony algorithm can summarize the information harvested in the iteration process every time after the iteration process, a reference is provided for the subsequent iteration process, thereby remarkably increasing the planning speed after the ant colony algorithm is used for power distribution network planning, and saving the planning time. In addition, the inventionfurther provides a planning device and equipment for the power distribution network wiring line and a computer readable storage medium, wherein the functions of the device and equipment are corresponding to those of the method.