Integrated air channel device, air channel control method of device and train

The embodiment of the invention provides an integrated air channel device. The device comprises a first cut-out cock, a second cut-out cock, a third cut-out cock and an air channel plate; the air channel plate is connected with a train pipe and a main air pipe; the three cut-out cocks are connected with the air channel plate; the first cut-out cock is used for controlling starting and stopping ofinflating the train pipe by the main air pipe; the second cut-out cock is used for controlling starting and stopping of inflating the main air pipe by the train pipe; the third cut-out cock is used for cooperation when the first cut-out cock and the second cut-out cock operate to achieve the situation that the main air pipe inflates the train pipe or the train pipe inflates the main air pipe. Theembodiment of the invention further provides an air channel control method of the integrated air channel device and a train. According to the device, all air channel elements are integrated on the airchannel plate, few pipe co