Abstract: Disclosed is a reciprocating compressor comprising: a motor part mounted inside a hermetic container for generating a rotational driving force; and a compression part for sucking a refrigerant into a cylinder and discharging the refrigerant through a suction channel and a discharge channel of a head accordingly as a piston is linearly reciprocated in the cylinder by the rotational driving force of the motor part, in the reciprocating compressor, a suction valve seat is included, the suction valve seat composed of: an open/close portion fixed between the cylinder and the head of the compression part and opposite to the suction channel for opening and closing the suction channel; and an elastic portion formed as a curved line at the periphery of the open/close portion for elastically supporting the open/close portion.