A scroll compressor, comprising: an oil storage chamber, disposed at a lower portion of the scroll compressor, for storing oil; a drive motor for driving a compression device, the compression device, disposed above the oil storage chamber and below the drive motor, wherein the compression device includes: a rotary shaft coupled to the drive motor, including therein: an oil supply path extending upright for flowing the oil stored in the oil storage chamber upward; and at least one oil hole (228a, 228b, 228d, 228e) for passing oil from the oil supply path to an outer circumferential surface of the rotary shaft; a main frame; a fixed scroll provided under the main frame; and an orbiting scroll, arranged between the main frame and the fixed scroll, for performing an orbiting movement, being engaged with the fixed scroll, to thereby form a compression chamber together with the fixed scroll, wherein the main frame, the fixed scroll, and the orbiting scroll are configured to form therebetween a medium pressure chamber which has lower pressure compared to the oil supply path, and wherein the scroll compressor further comprises a differential pressure path for guiding the oil discharged from the at least one oil hole (228a, 228b, 228d, 228e) to the compression chamber, the differential pressure path including a fixed scroll differential pressure path (301, 321, 341) formed through the fixed scroll, characterized in that the scroll compressor further comprises a second decompression pin (322, 342) provided in the fixed scroll differential pressure path (301, 321, 341), and the differential pressure path further includes a main frame differential pressure path formed through the main frame or an orbiting scroll differential pressure path formed through the orbiting scroll. an oil storage chamber, disposed at a lower portion of the scroll compressor, for storing oil; a drive motor for driving a compression device, the compression device, disposed above the oil storage chamber and below the drive motor, wherein the compression device includes: a rotary shaft coupled to the drive motor, including therein: an oil supply path extending upright for flowing the oil stored in the oil storage chamber upward; and at least one oil hole (228a, 228b, 228d, 228e) for passing oil from the oil supply path to an outer circumferential surface of the rotary shaft; a main frame; a fixed scroll provided under the main frame; and an orbiting scroll, arranged between the main frame and the fixed scroll, for performing an orbiting movement, being engaged with the fixed scroll, to thereby form a compression chamber together with the fixed scroll, wherein the main frame, the fixed scroll, and the orbiting scroll are configured to form therebetween a medium pressure chamber which has lower pressure compared to the oil supply path, and wherein the scroll compressor further comprises a differential pressure path for guiding the oil discharged from the at least one oil hole (228a, 228b, 228d, 228e) to the compression chamber, the differential pressure path including a fixed scroll differential pressure path (301, 321, 341) formed through the fixed scroll, characterized in that the scroll compressor further comprises a second decompression pin (322, 342) provided in the fixed scroll differential pressure path (301, 321, 341), and the differential pressure path further includes a main frame differential pressure path formed through the main frame or an orbiting scroll differential pressure path formed through the orbiting scroll. a rotary shaft coupled to the drive motor, including therein: an oil supply path extending upright for flowing the oil stored in the oil storage chamber upward; and at least one oil hole (228a, 228b, 228d, 228e) for passing oil from the oil supply path to an outer circumferential surface of the rotary shaft; a main frame; a fixed scroll provided under the main frame; and an orbiting scroll, arranged between the main frame and the fixed scroll, for performing an orbiting movement, being engaged with the fixed scroll, to thereby form a compression chamber together with the fixed scroll, wherein the main frame, the fixed scroll, and the orbiting scroll are configured to form therebetween a medium pressure chamber which has lower pressure compared to the oil supply path, and wherein the scroll compressor further comprises a differential pressure path for guiding the oil discharged from the at least one oil hole (228a, 228b, 228d, 228e) to the compression chamber, the differential pressure path including a fixed scroll differential pressure path (301, 321, 341) formed through the fixed scroll, characterized in that the scroll compressor further comprises a second decompression pin (322, 342) provided in the fixed scroll differential pressure path (301, 321, 341), and the differential pressure path further includes a main frame differential pressure path formed through the main frame or an orbiting scroll differential pressure path formed through the orbiting scroll.