A scroll compressor, comprising: a casing having an inner space in which oil is stored; a driving motor provided in the inner space of the casing; a rotating shaft coupled to the driving motor; a frame provided at one side of the driving motor and having a frame-side discharge passage formed therethrough in an axial direction; a first scroll having a discharge port (325a, 325b), formed at one side of the frame and having a scroll-side discharge passage formed therethrough in an axial direction so as to communicate with the frame-side discharge passage; a second scroll provided between the frame and the first scroll, forming compression chambers together with the first scroll while performing an orbiting motion with respect to the first scroll, the compression chambers including an initial compression chamber formed at an outer side, a final compression chamber formed at an inner side, and at least one intermediate compression chamber between the initial compression chamber and the final compression chamber; and a discharge cover coupled to the first scroll, and having a space part for accommodating an end portion of the discharge port (325a, 325b) and an end portion of the scroll-side discharge passage so that the refrigerant discharged through the discharge port (325a, 325b) is guided to the scroll-side discharge passage, wherein a discharge space (Vd) is defined by the space part of the discharge cover facing the first scroll, and a volume of the discharge space (Vd) is larger than a total volume of the initial compression chamber, characterized in that when a volume ratio is obtained by dividing the volume of the discharge space (Vd) by the total volume of the initial compression chamber, the volume ratio has 4.5 or more. a casing having an inner space in which oil is stored; a driving motor provided in the inner space of the casing; a rotating shaft coupled to the driving motor; a frame provided at one side of the driving motor and having a frame-side discharge passage formed therethrough in an axial direction; a first scroll having a discharge port (325a, 325b), formed at one side of the frame and having a scroll-side discharge passage formed therethrough in an axial direction so as to communicate with the frame-side discharge passage; a second scroll provided between the frame and the first scroll, forming compression chambers together with the first scroll while performing an orbiting motion with respect to the first scroll, the compression chambers including an initial compression chamber formed at an outer side, a final compression chamber formed at an inner side, and at least one intermediate compression chamber between the initial compression chamber and the final compression chamber; and a discharge cover coupled to the first scroll, and having a space part for accommodating an end portion of the discharge port (325a, 325b) and an end portion of the scroll-side discharge passage so that the refrigerant discharged through the discharge port (325a, 325b) is guided to the scroll-side discharge passage, wherein a discharge space (Vd) is defined by the space part of the discharge cover facing the first scroll, and a volume of the discharge space (Vd) is larger than a total volume of the initial compression chamber, characterized in that when a volume ratio is obtained by dividing the volume of the discharge space (Vd) by the total volume of the initial compression chamber, the volume ratio has 4.5 or more.