A scroll compressor comprising: a rotation shaft; an upper frame to support an upper end of the rotation shaft; a lower frame to support a lower end of the rotation shaft; an orbital scroll comprising a first base plate that is seated on the upper frame, a first wrap having a spiral shape that extends from an upper surface of the first base plate, and a boss portion that extends from a bottom surface of the first base plate; and a non-orbital scroll comprising a second base plate that covers an upper side of the orbital scroll, and a second wrap having a spiral shape that extends from a bottom surface of the second base plate, wherein the rotation shaft comprises: an oil flow path formed therein, an upper frame support portion that is inserted into the upper frame, a boss insertion portion to receive the boss portion, the boss insertion portion being recessed from an upper surface of the upper frame support portion, an oil residual groove (144c, 144d) that is recessed from a bottom portion of the boss insertion portion, characterized in that the oil residual groove (144c, 144d) is provided at an outer edge portion of the bottom portion of the boss insertion portion, and the rotation shaft further comprises: a first recessed portion that is recessed from an inner peripheral surface of the boss insertion portion to define a first supply flow path; a second recessed potion that is recessed from an outer peripheral surface of the boss insertion portion to define a second supply flow path; a first guide hole penetrating the upper frame support portion to connect the first recessed portion and the second recessed portion; and a second guide hole located above the first guide hole and penetrating the upper frame support portion to connect the first recessed portion and the second recessed portion. a rotation shaft; an upper frame to support an upper end of the rotation shaft; a lower frame to support a lower end of the rotation shaft; an orbital scroll comprising a first base plate that is seated on the upper frame, a first wrap having a spiral shape that extends from an upper surface of the first base plate, and a boss portion that extends from a bottom surface of the first base plate; and a non-orbital scroll comprising a second base plate that covers an upper side of the orbital scroll, and a second wrap having a spiral shape that extends from a bottom surface of the second base plate, wherein the rotation shaft comprises: an oil flow path formed therein, an upper frame support portion that is inserted into the upper frame, a boss insertion portion to receive the boss portion, the boss insertion portion being recessed from an upper surface of the upper frame support portion, an oil residual groove (144c, 144d) that is recessed from a bottom portion of the boss insertion portion, characterized in that the oil residual groove (144c, 144d) is provided at an outer edge portion of the bottom portion of the boss insertion portion, and the rotation shaft further comprises: a first recessed portion that is recessed from an inner peripheral surface of the boss insertion portion to define a first supply flow path; a second recessed potion that is recessed from an outer peripheral surface of the boss insertion portion to define a second supply flow path; a first guide hole penetrating the upper frame support portion to connect the first recessed portion and the second recessed portion; and a second guide hole located above the first guide hole and penetrating the upper frame support portion to connect the first recessed portion and the second recessed portion. an oil flow path formed therein, an upper frame support portion that is inserted into the upper frame, a boss insertion portion to receive the boss portion, the boss insertion portion being recessed from an upper surface of the upper frame support portion, an oil residual groove (144c, 144d) that is recessed from a bottom portion of the boss insertion portion, characterized in that the oil residual groove (144c, 144d) is provided at an outer edge portion of the bottom portion of the boss insertion portion, and the rotation shaft further comprises: a first recessed portion that is recessed from an inner peripheral surface of the boss insertion portion to define a first supply flow path; a second recessed potion that is recessed from an outer peripheral surface of the boss insertion portion to define a second supply flow path; a first guide hole penetrating the upper frame support portion to connect the first recessed portion and the second recessed portion; and a second guide hole located above the first guide hole and penetrating the upper frame support portion to connect the first recessed portion and the second recessed portion. a first recessed portion that is recessed from an inner peripheral surface of the boss insertion portion to define a first supply flow path; a second recessed potion that is recessed from an outer peripheral surface of the boss insertion portion to define a second supply flow path; a first guide hole penetrating the upper frame support portion to connect the first recessed portion and the second recessed portion; and a second guide hole located above the first guide hole and penetrating the upper frame support portion to connect the first recessed portion and the second recessed portion.