A single-wire communication system and a control method of the single-wire communication system are disclosed. A single-wire communication system includes a single-wire, a first communication module and a second communication module. The first communication module includes a plurality of current conveyors so as to communicate high-speed signals only with current freely from a capacitive load of the single-wire. The first communication module is connected to one side of the single-wire. The second communication module includes a plurality of current conveyors so as to communicate high-speed signals only with current freely from a capacitive load of the single-wire. The second communication module is connected to another side of the single-wire.