A laundry treating apparatus comprising: a first treating device (110, 210) comprising a cabinet defining an exterior appearance thereof, with an opening (119, 219) to load and unload laundry there through, a first space positioned in the cabinet to treat the laundry loaded through the opening (119, 219) and a door (114, 214) opening and closing the opening (119, 219); a second treating device (113, 213) provided underneath the first treating device (110,210), the second treating device (113, 213) comprising a second space to treat laundry, wherein the first space is provided with a tub located in the cabinet to store wash-water and a drum pivotally provided in the tub, wherein a surface of the cabinet in which the opening (119, 219) is positioned comprises an inclined part, the inclined part containing the opening (119, 219), wherein the inclined part is inclined relative to a front surface of the second treating device (113, 213) such that it projects from the front surface of the second treating device (113, 213), wherein the inclined part comprises: a first inclined surface inclined relative to a front surface of the second treating device (113, 213) such that, in a downward direction of the first inclined surface, it projects from the front surface of the second treating device (113, 213); and a second inclined surface continuous with the first inclined surface, wherein the second inclined surface is inclined relative to a front surface of the second treating device (113, 213) such that, in an upward direction of the second inclined surface, it projects from the front surface of the second treating device (113, 213), and wherein the area where the first inclined surface mates with the second inclined surface projects farthest relative to the front surface of the second treating device (113, 213), wherein the first treating device further comprises: a support part defining a storage space therein, being provided between a bottom surface of the tub and a bottom surface of the cabinet; and opening and closing means provided at a surface of the support part to provide user access to the storage space. a first treating device (110, 210) comprising a cabinet defining an exterior appearance thereof, with an opening (119, 219) to load and unload laundry there through, a first space positioned in the cabinet to treat the laundry loaded through the opening (119, 219) and a door (114, 214) opening and closing the opening (119, 219); a second treating device (113, 213) provided underneath the first treating device (110,210), the second treating device (113, 213) comprising a second space to treat laundry, wherein the first space is provided with a tub located in the cabinet to store wash-water and a drum pivotally provided in the tub, wherein a surface of the cabinet in which the opening (119, 219) is positioned comprises an inclined part, the inclined part containing the opening (119, 219), wherein the inclined part is inclined relative to a front surface of the second treating device (113, 213) such that it projects from the front surface of the second treating device (113, 213), wherein the inclined part comprises: a first inclined surface inclined relative to a front surface of the second treating device (113, 213) such that, in a downward direction of the first inclined surface, it projects from the front surface of the second treating device (113, 213); and a second inclined surface continuous with the first inclined surface, wherein the second inclined surface is inclined relative to a front surface of the second treating device (113, 213) such that, in an upward direction of the second inclined surface, it projects from the front surface of the second treating device (113, 213), and wherein the area where the first inclined surface mates with the second inclined surface projects farthest relative to the front surface of the second treating device (113, 213), wherein the first treating device further comprises: a support part defining a storage space therein, being provided between a bottom surface of the tub and a bottom surface of the cabinet; and opening and closing means provided at a surface of the support part to provide user access to the storage space. a first inclined surface inclined relative to a front surface of the second treating device (113, 213) such that, in a downward direction of the first inclined surface, it projects from the front surface of the second treating device (113, 213); and a second inclined surface continuous with the first inclined surface, wherein the second inclined surface is inclined relative to a front surface of the second treating device (113, 213) such that, in an upward direction of the second inclined surface, it projects from the front surface of the second treating device (113, 213), and wherein the area where the first inclined surface mates with the second inclined surface projects farthest relative to the front surface of the second treating device (113, 213), wherein the first treating device further comprises: a support part defining a storage space therein, being provided between a bottom surface of the tub and a bottom surface of the cabinet; and opening and closing means provided at a surface of the support part to provide user access to the storage space.