The invention discloses a dual channel voting system. The dual channel voting system comprises an A channel main control computer, a B channel main control computer, an A channel aggregation switch, a B channel aggregation switch and at least one dual channel controller; the dual channel controller is connected with a plurality of dual channel voters which are in hand-in-hand connection; the A channel main control computer, the A channel aggregation switch, an A channel of the dual channel controller, and A channels of the plurality of dual channel voters which are in hand-in-hand connection are orderly connected to form a voting link A; and the B channel main control computer, the B channel aggregation switch, a B channel of the dual channel controller and B channels of the plurality of dual channel voters which are in hand-in-hand connection are orderly connected to form a voting link B independent of the voting link A. The dual channel voting system provided by the invention forms two real-time online, and mutually backed up complete voting links, on the premise of a self-contained system, regional isolation is realized, common network attacks can be defended and the robustness and stability of the whole network system can be enhanced.