A scroll compressor comprising: a casing including an internal space; a drive motor comprising: a stator located in the internal space of the casing, and a rotator located radially inward of the stator and configured to rotate with respect to the stator, the rotator defining an internal flow passage and an external flow passage that passes through the drive motor in an axial direction of the drive motor; a rotation shaft connected to the rotator and configured to rotate based on rotation of the rotator; a compression unit comprising: a first scroll located vertically below the drive motor, and a second scroll that is located inside of the first scroll, that is connected to the rotation shaft, and that is configured to define a compression chamber based on rotation relative to the first scroll, the compression unit being configured to compress refrigerant in the compression chamber and discharging the refrigerant toward the internal space of the casing; a discharge pipe that communicates with an upper space of the internal space in the casing, and that is located vertically above the drive motor a balance weight connected to the rotator; and an oil separation member that is located between the drive motor and the discharge pipe, that defines a receiving space recessed from an upper surface of the oil separation member, and that is configured to, based on centrifugal force separate oil from refrigerant discharged from the compression unit, the oil separation member comprises: a bottom portion that is located at an end portion of the rotator or that is connected to a connection part that connects to the rotator, the bottom portion being spaced apart from the discharge pipe; and a side-wall portion that protrudes upward from an edge of the bottom portion that extends vertically above the end portion of the discharge pipe, and wherein the bottom portion and the side-wall portion define the receiving space of the oil separation member, characterized in that the oil separation member is coupled to an upper surface of the balance weight, wherein the bottom portion is fixed to the upper surface of the balance weight, or the oil separation member and the balance weight are portions of a single body. a casing including an internal space; a drive motor comprising: a stator located in the internal space of the casing, and a rotator located radially inward of the stator and configured to rotate with respect to the stator, the rotator defining an internal flow passage and an external flow passage that passes through the drive motor in an axial direction of the drive motor; a stator located in the internal space of the casing, and a rotator located radially inward of the stator and configured to rotate with respect to the stator, the rotator defining an internal flow passage and an external flow passage that passes through the drive motor in an axial direction of the drive motor; a rotation shaft connected to the rotator and configured to rotate based on rotation of the rotator; a compression unit comprising: a first scroll located vertically below the drive motor, and a second scroll that is located inside of the first scroll, that is connected to the rotation shaft, and that is configured to define a compression chamber based on rotation relative to the first scroll, the compression unit being configured to compress refrigerant in the compression chamber and discharging the refrigerant toward the internal space of the casing; a first scroll located vertically below the drive motor, and a second scroll that is located inside of the first scroll, that is connected to the rotation shaft, and that is configured to define a compression chamber based on rotation relative to the first scroll, the compression unit being configured to compress refrigerant in the compression chamber and discharging the refrigerant toward the internal space of the casing; a discharge pipe that communicates with an upper space of the internal space in the casing, and that is located vertically above the drive motor a balance weight connected to the rotator; and an oil separation member that is located between the drive motor and the discharge pipe, that defines a receiving space recessed from an upper surface of the oil separation member, and that is configured to, based on centrifugal force separate oil from refrigerant discharged from the compression unit, the oil separation member comprises: a bottom portion that is located at an end portion of the rotator or that is connected to a connection part that connects to the rotator, the bottom portion being spaced apart from the discharge pipe; and a side-wall portion that protrudes upward from an edge of the bottom portion that extends vertically above the end portion of the discharge pipe, and a bottom portion that is located at an end portion of the rotator or that is connected to a connection part that connects to the rotator, the bottom portion being spaced apart from the discharge pipe; and a side-wall portion that protrudes upward from an edge of the bottom portion that extends vertically above the end portion of the discharge pipe, and wherein the bottom portion and the side-wall portion define the receiving space of the oil separation member, characterized in that the oil separation member is coupled to an upper surface of the balance weight, wherein the bottom portion is fixed to the upper surface of the balance weight, or the oil separation member and the balance weight are portions of a single body.