To provide a compressor device capable of adding a piston crank part without being accompanied by large scale structure change.

This compressor is provided with a motor device 2 as a drive source, a piston crank device 4 supplying compressed air by a piston 9 connected to an output shaft 6 of a motor device 2 and reciprocating, a drier device 5 drying compressed air from a piston crank device 4 and pumping dried compressed air to an outer apparatus, and a flow passage 17 provided between the piston crank device 4 and the drier device 5 in which compressed air circulates. The drier device 5 is coaxially arranged with opposing output shaft 6 of the motor device 2, the pair of piston crank devices 4 is provided in such a manner that the piston 9 reciprocates in a plane including an output shaft 6 of the motor device 2. The flow passage 17 extends in a direction in which the piston 9 reciprocates.