An arc welding device of a consumable electrode type that generates an arc between a tip end of welding wire and a portion to be welded to weld a base material, comprising: a wire feeding device configured to feed welding wire from a wire feeding source to a welding torch, the wire feeding device comprising: an intermediate wire feeding source that is disposed between the wire feeding source and the welding torch and is configured to temporarily store the welding wire fed from the wire feeding source and to feed the stored welding wire to the welding torch; a first feeding part for feeding the welding wire of the wire feeding source to the intermediate wire feeding source; a second feeding part for feeding the welding wire stored in the intermediate wire feeding source to the welding torch; and a feed control unit that controls feeding speed of welding wire fed by each of the first feeding part and the second feeding part, and a power supply device for supplying welding current to welding wire to be fed to a base material by the wire feeding device; wherein the power supply device includes a first power supply and a second power supply that are connected in parallel, wherein the feed control unit includes a first control unit that is located at the first power supply and that controls speed of feeding by the first feeding part, and a second control unit that is located at the second power supply and that controls speed of feeding by the second feeding part, wherein the second power supply includes a transmission unit that transmits speed information indicating the feeding speed of welding wire fed by the second feeding part to the first power supply, wherein the first power supply includes a reception unit that receives speed information transmitted from the second power supply, and wherein the first control unit controls the speed of feeding by the first feeding part based on the speed information received by the reception unit. a wire feeding device configured to feed welding wire from a wire feeding source to a welding torch, the wire feeding device comprising: an intermediate wire feeding source that is disposed between the wire feeding source and the welding torch and is configured to temporarily store the welding wire fed from the wire feeding source and to feed the stored welding wire to the welding torch; a first feeding part for feeding the welding wire of the wire feeding source to the intermediate wire feeding source; a second feeding part for feeding the welding wire stored in the intermediate wire feeding source to the welding torch; and a feed control unit that controls feeding speed of welding wire fed by each of the first feeding part and the second feeding part, and an intermediate wire feeding source that is disposed between the wire feeding source and the welding torch and is configured to temporarily store the welding wire fed from the wire feeding source and to feed the stored welding wire to the welding torch; a first feeding part for feeding the welding wire of the wire feeding source to the intermediate wire feeding source; a second feeding part for feeding the welding wire stored in the intermediate wire feeding source to the welding torch; and a feed control unit that controls feeding speed of welding wire fed by each of the first feeding part and the second feeding part, and a power supply device for supplying welding current to welding wire to be fed to a base material by the wire feeding device; wherein the power supply device includes a first power supply and a second power supply that are connected in parallel, wherein the feed control unit includes a first control unit that is located at the first power supply and that controls speed of feeding by the first feeding part, and a second control unit that is located at the second power supply and that controls speed of feeding by the second feeding part, wherein the second power supply includes a transmission unit that transmits speed information indicating the feeding speed of welding wire fed by the second feeding part to the first power supply, wherein the first power supply includes a reception unit that receives speed information transmitted from the second power supply, and wherein the first control unit controls the speed of feeding by the first feeding part based on the speed information received by the reception unit.