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 , 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 and an end portion of the scroll-side discharge passage so that the refrigerant discharged through the discharge port 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 , 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 and an end portion of the scroll-side discharge passage so that the refrigerant discharged through the discharge port 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. <EOS>