A pressure purging device for an inkjet recording apparatus includes a back pressure tank 21, a distribution tank 12, ink opening/closing electromagnetic valves 13, and recording heads 14, and in which the distribution tank 12 is connected to the back pressure tank 21 via an ink supply path 24, the ink opening/closing electromagnetic valves 13 are attached to the distribution tank 12 while being connected to the recording heads 14 via the distribution supply pipe 15, the ink opening/closing electromagnetic valves 13 are directly attached to the distribution tank 12, and there is provided an air switching three-port electromagnetic valve 61 connected to an upper part inside of the back pressure tank 21 via an air path 63 while being connected to a compressed air supply path 62.