A compressor, comprising: a casing ; a drive motor provided in the inner space of the casing; a rotating shaft coupled to the driving motor to rotate; an orbiting scroll including an orbiting plate portion coupled to the rotating shaft and an orbiting wrap extending along a circumference direction of the orbiting plate portion; a fixed scroll comprising a fixed wrap provided in engagement with the orbiting wrap to compress a refrigerant, a fixed plate portion including a suction opening receiving the refrigerant and a discharge opening spaced apart from the suction opening to discharge the refrigerant; wherein the orbiting scroll further includes a rotation shaft coupling portion coupled to the rotation shaft, wherein the orbiting wrap is provided extending from the rotation shaft coupling portion toward the case along the circumference of the orbiting plate portion, wherein the rotation shaft coupling portion is provided to be penetrated by the rotating shaft , wherein the orbiting wrap and the rotation shaft coupling portion are disposed to be overlapped in height, wherein a protrusion protruded toward an outer circumference of the rotation shaft coupling portion , is formed near an inner end of the fixed wrap wherein the rotation shaft coupling portion is provided to include a circular arc surface facing the protrusion , wherein the orbiting wrap is provided to extend from the circular arc surface , wherein the thickness of the orbiting wrap extended from the circular arc surface is thicker than the thickness of the orbiting wrap facing the suction opening , characterized in that thickness of the orbiting wrap is provided to decrease as it extends from the discharge opening toward the suction opening . a casing ; a drive motor provided in the inner space of the casing; a rotating shaft coupled to the driving motor to rotate; an orbiting scroll including an orbiting plate portion coupled to the rotating shaft and an orbiting wrap extending along a circumference direction of the orbiting plate portion; a fixed scroll comprising a fixed wrap provided in engagement with the orbiting wrap to compress a refrigerant, a fixed plate portion including a suction opening receiving the refrigerant and a discharge opening spaced apart from the suction opening to discharge the refrigerant; wherein the orbiting scroll further includes a rotation shaft coupling portion coupled to the rotation shaft, wherein the orbiting wrap is provided extending from the rotation shaft coupling portion toward the case along the circumference of the orbiting plate portion, wherein the rotation shaft coupling portion is provided to be penetrated by the rotating shaft , wherein the orbiting wrap and the rotation shaft coupling portion are disposed to be overlapped in height, wherein a protrusion protruded toward an outer circumference of the rotation shaft coupling portion , is formed near an inner end of the fixed wrap wherein the rotation shaft coupling portion is provided to include a circular arc surface facing the protrusion , wherein the orbiting wrap is provided to extend from the circular arc surface , wherein the thickness of the orbiting wrap extended from the circular arc surface is thicker than the thickness of the orbiting wrap facing the suction opening , characterized in that thickness of the orbiting wrap is provided to decrease as it extends from the discharge opening toward the suction opening . <EOS>