A linear featuring an improved oil feed performance compressor comprises a cylinder having a refrigerant compression space inside; a piston, linearly reciprocating inside the cylinder to compress refrigerant; a frame, to which one end of the cylinder is affixed and which has a mounting groove at a lower portion; an oil feed assembly settled in the mounting groove of the frame, for pumping/supplying oil; an oil supply path in a linear shape, which is positioned at a lower portion inside the frame to communicate with the mounting groove of the frame and with the bottom of the cylinder and which supplies oil between the cylinder and the piston; and an oil recovery path in a linear shape, which is at an upper portion inside the frame asymmetrically to the oil supply path to communicate with an upper side of the frame and with the top of the cylinder and which recovers oil between the cylinder and the piston. The oil feed assembly is in kit form, providing a plastic casing to accommodate an oil spring, first and second oil springs, an oil suction valve, and an oil discharge valve, to which at least two members are axially assembled. In so doing, the assembly process is facilitated and further productivity and assemblability of components are improved.