Disclosed is a compressor provided with a valve plate, a suction reed valve, and a seat surface. The valve plate has a suction port that communicates with a compression chamber and a suction chamber. The suction reed valve can open and close the suction port. The seat surface is formed on the valve plate, and is abutted with the suction reed valve when the suction reed valve closes the suction port. The seat surface is provided with a flat seal surface surrounding the suction port, and a groove surrounding the seal surface. The valve portion of the suction reed valve is provided with a flat sealing surface which is brought into close contact with the seal surface to close the suction port. The seat surface has a plurality of protrusions which space the seal surface from the sealing surface when the pressure of the compression chamber is identical to the pressure of the suction chamber. The protrusions are formed on the location excluding the seal surface.