Switching device for transformation, switching and debugging of subway signal system

The utility model discloses a switching device for transformation, switching and debugging of a subway signal system. The switching device comprises a controller, a power supply and a plurality of relay switching units, the controller is used for sending a switching signal; the relay switching unit comprises a switching circuit and a state feedback circuit; the switching circuit is started according to the switching signal, and the relay switching unit is connected with an old system, a new system and equipment; the old system is connected with the equipment through the relay switching unit, and the relay switching unit disconnects the old system from the equipment according to the switching signal, so that the new system is connected with the equipment; the state feedback circuit is connected with the switching circuit and the controller and is used for acquiring state information of the switching circuit and sending the state information to the controller; the power supply is used for supplying power to the