A scroll compressor of the lower compression type, comprising: a casing having an internal space; a drive comprising a stator fixed in the internal space and a rotor rotatably provided within the stator, in which a portion of an outer circumferential surface of the stator is fixed to an inner circumferential surface of the casing and the other portion of the outer circumferential surface of the stator is separated from the inner circumferential surface of the casing in order to divide the internal space of the casing into at least one or more spaces (V1,V2,V3), and a slot around which a coil is wound is formed on the inner circumferential surface of the stator, wherein an upper space of one or more spaces (V1,V2,V3) of the casing is formed at an upper side of the drive; a compression device provided at a lower side of the drive and having a discharge hole so as to discharge compressed refrigerant into the internal space of the casing, wherein a lower space of the one or more spaces (V1,V2,V3) of the casing is formed at a lower side of the compression device; a rotational shaft configured to transfer a drive force from the drive to the compression device; and a passage separator provided between the drive and the compression device to separate a refrigerant passage which guides refrigerant discharged through the discharge hole to the upper space of the casing from an oil passage which guides oil separated from the refrigerant to the lower space of the casing, wherein the passage separator comprises: a first partition wall disposed at an outer side of the discharge hole in a radial direction, and both axial ends of the first partition wall face the stator and compression device to separate the refrigerant passage from the passage oil, respectively, such that an outer circumferential surface of the first partition wall and an inner circumferential surface of the casing form the oil passage, and characterized in that the passage separator further comprises: a second partition wall disposed at an inner side of the discharge hole in the radial direction to guide compressed refrigerant discharged through the discharge hole to a gas passage, and a third partition wall connecting between the first partition wall and second partition wall, and covering at least a portion of an oil recovery passage, wherein the first partition wall, the second partition wall, and the third partition wall are formed as an integral body, and wherein the discharge hole is formed between the first partition wall and the second partition wall. a casing having an internal space; a drive comprising a stator fixed in the internal space and a rotor rotatably provided within the stator, in which a portion of an outer circumferential surface of the stator is fixed to an inner circumferential surface of the casing and the other portion of the outer circumferential surface of the stator is separated from the inner circumferential surface of the casing in order to divide the internal space of the casing into at least one or more spaces (V1,V2,V3), and a slot around which a coil is wound is formed on the inner circumferential surface of the stator, wherein an upper space of one or more spaces (V1,V2,V3) of the casing is formed at an upper side of the drive; a compression device provided at a lower side of the drive and having a discharge hole so as to discharge compressed refrigerant into the internal space of the casing, wherein a lower space of the one or more spaces (V1,V2,V3) of the casing is formed at a lower side of the compression device; a rotational shaft configured to transfer a drive force from the drive to the compression device; and a passage separator provided between the drive and the compression device to separate a refrigerant passage which guides refrigerant discharged through the discharge hole to the upper space of the casing from an oil passage which guides oil separated from the refrigerant to the lower space of the casing, wherein the passage separator comprises: a first partition wall disposed at an outer side of the discharge hole in a radial direction, and both axial ends of the first partition wall face the stator and compression device to separate the refrigerant passage from the passage oil, respectively, such that an outer circumferential surface of the first partition wall and an inner circumferential surface of the casing form the oil passage, and characterized in that the passage separator further comprises: a second partition wall disposed at an inner side of the discharge hole in the radial direction to guide compressed refrigerant discharged through the discharge hole to a gas passage, and a third partition wall connecting between the first partition wall and second partition wall, and covering at least a portion of an oil recovery passage, wherein the first partition wall, the second partition wall, and the third partition wall are formed as an integral body, and wherein the discharge hole is formed between the first partition wall and the second partition wall. a second partition wall disposed at an inner side of the discharge hole in the radial direction to guide compressed refrigerant discharged through the discharge hole to a gas passage, and a third partition wall connecting between the first partition wall and second partition wall, and covering at least a portion of an oil recovery passage, wherein the first partition wall, the second partition wall, and the third partition wall are formed as an integral body, and wherein the discharge hole is formed between the first partition wall and the second partition wall.