The invention discloses a multi-tree-based feeder topology representation method, which comprises the steps as follows: power supplies, loads, buses and circuits in a feeder topology all are divided into nodes; switches among the nodes are taken as boundaries of connection nodes; the nodes and the boundaries form a multi-tree; each node is described and comprises the node types, the number of layers, the node numbers, the father node numbers, the sub-node quantity and the sub-node numbers; the corresponding relationship between the nodes and the switches is represented with a two-dimensional array; and corresponding information of the switches is stored. The topology structure of a non-fault power-losing region can be comprehensively described; and the multi-tree-based feeder topology representation method has the characteristics that a power supply recovery algorithm-oriented design is adopted and the method is clear in physical significance, independent in control element, small in memory space, high in access efficiency and the like.