A scroll compressor comprising: a casing; a main frame fixed to an inside of the casing; a rotating shaft inserted through the main frame to be supported thereby and provided with an eccentric portion; an orbiting scroll including an orbiting end plate coupled to the eccentric portion of the rotating shaft, and an orbiting wrap extending from one side surface of the orbiting end plate; and a fixed scroll including a fixed end plate provided with a discharge port, and a fixed wrap extending from the fixed end plate toward the orbiting end plate to form compression chambers together with the orbiting wrap, wherein the orbiting scroll includes a rotating shaft coupling portion axially extending from a central portion of the orbiting end plate to radially overlap the orbiting wrap, such that the eccentric portion of the rotating shaft is coupled thereto, wherein a portion of the orbiting wrap extends from an end surface of the rotating shaft coupling portion facing the fixed end plate, wherein the orbiting end plate includes an orbiting step surface between an outer surface of a first portion of the orbiting wrap and an inner surface of a second portion of the orbiting wrap, wherein the second portion is located more radially outward than the first portion, and the first and second portions face each other, wherein the fixed wrap includes a fixed step surface to correspond to the orbiting step surface, characterized in that the orbiting step surface and the fixed step surface are spaced apart from each other at a discharge starting angle of at least one of the compression chambers, the orbiting step surface and the fixed step surface are kept spaced apart from each other while refrigerant is discharged from a compression chamber that communicates with the orbiting end plate. the orbiting step surface is formed to have an arcuate shape, when viewed in a vertical direction, between the outer surface of the first portion of the orbiting wrap and the inner surface of the second portion of the orbiting wrap, and the fixed step surface is formed to have an arcuate shape having a curvature greater than a curvature of the orbiting step surface. a casing; a main frame fixed to an inside of the casing; a rotating shaft inserted through the main frame to be supported thereby and provided with an eccentric portion; an orbiting scroll including an orbiting end plate coupled to the eccentric portion of the rotating shaft, and an orbiting wrap extending from one side surface of the orbiting end plate; and a fixed scroll including a fixed end plate provided with a discharge port, and a fixed wrap extending from the fixed end plate toward the orbiting end plate to form compression chambers together with the orbiting wrap, wherein the orbiting scroll includes a rotating shaft coupling portion axially extending from a central portion of the orbiting end plate to radially overlap the orbiting wrap, such that the eccentric portion of the rotating shaft is coupled thereto, wherein a portion of the orbiting wrap extends from an end surface of the rotating shaft coupling portion facing the fixed end plate, wherein the orbiting end plate includes an orbiting step surface between an outer surface of a first portion of the orbiting wrap and an inner surface of a second portion of the orbiting wrap, wherein the second portion is located more radially outward than the first portion, and the first and second portions face each other, wherein the fixed wrap includes a fixed step surface to correspond to the orbiting step surface, characterized in that the orbiting step surface and the fixed step surface are spaced apart from each other at a discharge starting angle of at least one of the compression chambers, the orbiting step surface and the fixed step surface are kept spaced apart from each other while refrigerant is discharged from a compression chamber that communicates with the orbiting end plate. the orbiting step surface is formed to have an arcuate shape, when viewed in a vertical direction, between the outer surface of the first portion of the orbiting wrap and the inner surface of the second portion of the orbiting wrap, and the fixed step surface is formed to have an arcuate shape having a curvature greater than a curvature of the orbiting step surface.