A displacement control valve comprising: a valve housing comprising a first valve chamber formed midway along a discharge-side passage (12a, 12b) that connects a discharge chamber for discharging fluid and a control chamber for controlling a fluid discharge rate, a second valve chamber formed midway along a suction-side passage (13a, 13b) that connects a suction chamber for sucking fluid and the control chamber, and a pressure chamber formed across the first valve chamber from the second valve chamber; a valve body having a first valve section for opening and closing the discharge-side passage (12a, 12b) in the first valve chamber, and a second valve section for opening and closing the suction-side passage (13a, 13b) in the second valve chamber, the first valve section and the second valve section being integrally formed and performing opening and closing operations in opposite directions by reciprocation thereof; and a solenoid for exerting electromagnetic drive force on the valve body in such a direction as to close the first valve section, characterized in that the valve housing is provided with at least a part of a first communicating passage that communicates with the pressure chamber at one end thereof and that is communicable with the second valve chamber at the other end thereof, wherein the solenoid comprises a coil for generating a magnetic field by energization and a fixed core that has an end portion capable of abutting one end of the valve housing, and wherein the fixed core comprises, at the end portion thereof, a seat surface on which the second valve section is seated and a through hole that extends radially therethrough and constitutes a part of the first communicating passage. a valve housing comprising a first valve chamber formed midway along a discharge-side passage (12a, 12b) that connects a discharge chamber for discharging fluid and a control chamber for controlling a fluid discharge rate, a second valve chamber formed midway along a suction-side passage (13a, 13b) that connects a suction chamber for sucking fluid and the control chamber, and a pressure chamber formed across the first valve chamber from the second valve chamber; a valve body having a first valve section for opening and closing the discharge-side passage (12a, 12b) in the first valve chamber, and a second valve section for opening and closing the suction-side passage (13a, 13b) in the second valve chamber, the first valve section and the second valve section being integrally formed and performing opening and closing operations in opposite directions by reciprocation thereof; and a solenoid for exerting electromagnetic drive force on the valve body in such a direction as to close the first valve section, characterized in that the valve housing is provided with at least a part of a first communicating passage that communicates with the pressure chamber at one end thereof and that is communicable with the second valve chamber at the other end thereof, wherein the solenoid comprises a coil for generating a magnetic field by energization and a fixed core that has an end portion capable of abutting one end of the valve housing, and wherein the fixed core comprises, at the end portion thereof, a seat surface on which the second valve section is seated and a through hole that extends radially therethrough and constitutes a part of the first communicating passage.