A scroll compressor, comprising: a casing having a sealed inner space; a drive motor installed in the inner space of the casing; an orbiting scroll coupled to the drive motor to perform an orbiting motion; a non-orbiting scroll including an end plate provided at a first side of the orbiting scroll and having a first surface defining a compression chamber by being engaged with the orbiting scroll and a second surface having an outer wall portion and an inner wall portion that extend in an axial direction with a predetermined gap therebetween in a radial direction, the inner wall portion provided therein with a discharge port configured to discharge refrigerant compressed in the compression chamber into the inner space of the casing; and a floating plate configured to cover an area between the outer wall portion and the inner wall portion of the non-orbiting scroll so as to form a back pressure chamber with the non-orbiting scroll, wherein the floating plate comprises: an upper cover portion having an annular shape to form an upper surface of the back pressure chamber; an outer cover portion that extends from an outer circumference of the upper cover portion toward the non-orbiting scroll in the axial direction so as to be slidably fitted to the outer wall portion; an inner cover portion that extends from an inner circumference of the upper cover portion toward the non-orbiting scroll in the axial direction so as to be slidably fitted to an inner circumference of the inner wall portion; and a valve accommodating portion that axially extends from an inner circumferential side of the inner cover portion so as to accommodate a discharge valve configured to open and close the discharge port, wherein the upper cover portion, the outer cover portion, the inner cover portion, and the valve accommodating portion are formed as a single body, and characterized in that a height of the inner cover portion is formed to be lower than a height of the inner wall portion, so that a lower end of the inner cover portion is formed higher than the lower end of the inner wall portion forming the back pressure chamber. a casing having a sealed inner space; a drive motor installed in the inner space of the casing; an orbiting scroll coupled to the drive motor to perform an orbiting motion; a non-orbiting scroll including an end plate provided at a first side of the orbiting scroll and having a first surface defining a compression chamber by being engaged with the orbiting scroll and a second surface having an outer wall portion and an inner wall portion that extend in an axial direction with a predetermined gap therebetween in a radial direction, the inner wall portion provided therein with a discharge port configured to discharge refrigerant compressed in the compression chamber into the inner space of the casing; and a floating plate configured to cover an area between the outer wall portion and the inner wall portion of the non-orbiting scroll so as to form a back pressure chamber with the non-orbiting scroll, wherein the floating plate comprises: an upper cover portion having an annular shape to form an upper surface of the back pressure chamber; an outer cover portion that extends from an outer circumference of the upper cover portion toward the non-orbiting scroll in the axial direction so as to be slidably fitted to the outer wall portion; an inner cover portion that extends from an inner circumference of the upper cover portion toward the non-orbiting scroll in the axial direction so as to be slidably fitted to an inner circumference of the inner wall portion; and a valve accommodating portion that axially extends from an inner circumferential side of the inner cover portion so as to accommodate a discharge valve configured to open and close the discharge port, wherein the upper cover portion, the outer cover portion, the inner cover portion, and the valve accommodating portion are formed as a single body, and characterized in that a height of the inner cover portion is formed to be lower than a height of the inner wall portion, so that a lower end of the inner cover portion is formed higher than the lower end of the inner wall portion forming the back pressure chamber. an upper cover portion having an annular shape to form an upper surface of the back pressure chamber; an outer cover portion that extends from an outer circumference of the upper cover portion toward the non-orbiting scroll in the axial direction so as to be slidably fitted to the outer wall portion; an inner cover portion that extends from an inner circumference of the upper cover portion toward the non-orbiting scroll in the axial direction so as to be slidably fitted to an inner circumference of the inner wall portion; and a valve accommodating portion that axially extends from an inner circumferential side of the inner cover portion so as to accommodate a discharge valve configured to open and close the discharge port, wherein the upper cover portion, the outer cover portion, the inner cover portion, and the valve accommodating portion are formed as a single body, and characterized in that a height of the inner cover portion is formed to be lower than a height of the inner wall portion, so that a lower end of the inner cover portion is formed higher than the lower end of the inner wall portion forming the back pressure chamber.