The invention relates to a feeder automation switch layout method and system. The method comprises the following steps: searching ring main units, a plurality of regions, overhead lines, reconstructable switches of the ring main units, the number of users in each region and the number of switches of each ring main unit according to an obtained network topological graph; obtaining equivalent failure rate of each region and power failure time in restoration phase of each region; establishing a dual-objective layout planning model according to preset time, the power failure time in restoration phase of each region, preset cost, the reconstructable switches, the ring main units, the regions, the equivalent failure rate of each region, the number of users in each region and the number of switches of each ring main unit; solving the dual-objective layout planning model to obtain a Pareto leading edge formed by a plurality of solutions, and selecting an optimization solution; and selecting layout switches from the reconstructable switches according to the optimization solution, and generating an automation layout scheme according to the layout switches and outputting the automation layoutscheme. The method and system are suitable for switch reconstruction of cables and overhead lines, consider both cost and average power failure time, and are high in practicality.