A scroll compressor, comprising: a casing which contains oil at a lower space thereof, the casing including a refrigerant suction pipe through which a refrigerant is suctioned into the casing and a refrigerant discharge pipe through which the refrigerant is discharged; a driving motor provided at a position spaced from an upper end of the casing by a predetermined gap, such that an upper space is formed in the casing; a rotation shaft coupled to a rotor of the driving motor, and having an oil supply passage to guide the oil contained in the casing to an upper side; a frame provided below the driving motor; a fixed scroll provided below the frame, and having a fixed wrap; an orbiting scroll provided between the frame and the fixed scroll, having an orbiting wrap so as to form a compression chamber (V, V1, V2) by being engaged with the fixed wrap, and having a rotation shaft coupling portion for coupling the rotation shaft thereto in a penetrating manner, and an oil collection unit including an oil separator provided at the upper space of the casing and configured to separate oil from the refrigerant, and including an oil guiding portion configured to guide the oil separated by the oil separator to the lower space of the casing, characterized in that the oil separator includes: an oil separation container coupled to one end of the refrigerant discharge pipe which penetrates the casing and separated from the drive motor, the oil separation container having a predetermined oil separation space, and with which one end of the oil guiding portion is communicated; and a communication pipe provided at one side of the oil separation container, and configured to communicate the oil separation space with the upper space. a casing which contains oil at a lower space thereof, the casing including a refrigerant suction pipe through which a refrigerant is suctioned into the casing and a refrigerant discharge pipe through which the refrigerant is discharged; a driving motor provided at a position spaced from an upper end of the casing by a predetermined gap, such that an upper space is formed in the casing; a rotation shaft coupled to a rotor of the driving motor, and having an oil supply passage to guide the oil contained in the casing to an upper side; a frame provided below the driving motor; a fixed scroll provided below the frame, and having a fixed wrap; an orbiting scroll provided between the frame and the fixed scroll, having an orbiting wrap so as to form a compression chamber (V, V1, V2) by being engaged with the fixed wrap, and having a rotation shaft coupling portion for coupling the rotation shaft thereto in a penetrating manner, and an oil collection unit including an oil separator provided at the upper space of the casing and configured to separate oil from the refrigerant, and including an oil guiding portion configured to guide the oil separated by the oil separator to the lower space of the casing, characterized in that the oil separator includes: an oil separation container coupled to one end of the refrigerant discharge pipe which penetrates the casing and separated from the drive motor, the oil separation container having a predetermined oil separation space, and with which one end of the oil guiding portion is communicated; and a communication pipe provided at one side of the oil separation container, and configured to communicate the oil separation space with the upper space. an oil separation container coupled to one end of the refrigerant discharge pipe which penetrates the casing and separated from the drive motor, the oil separation container having a predetermined oil separation space, and with which one end of the oil guiding portion is communicated; and a communication pipe provided at one side of the oil separation container, and configured to communicate the oil separation space with the upper space.