A control center, comprising; a frame, a plurality of functional units disposed on a plurality of stages in an up and down direction and fixed to the frame, and a plurality of external connection cables extending in the up and down direction within the frame of the control center and connecting each of the plurality of functional units with an external device, characterized by a cable supporting structure fixed to the frame and supporting the external connection cables, wherein the cable supporting structure has a rod like supporting portion with a rod like shape which supports the plurality of external connection cables that are arranged in a line in a horizontal direction, with keeping parallel state each other, and extends in the horizontal direction, and the rod like supporting portion is composed of plural kinds of rod like supporting portion (20, 21) whose rows of external connection cables to support are different from each other, and respective kinds of rod like supporting portions (20, 21), which are provided in plural, are disposed, with keeping a space in between, in the up and down direction, wherein the cable supporting structure is composed of plural kinds of cable supporting member (9, 10) which have one by one a kind of rod like supporting portion (20, 21), and respective kinds of cable supporting members (9, 10), which are provided in plural, are disposed alternately, with keeping a space in between, in the up and down direction, wherein the first type of cable supporting member is provided with two frame fixing portions (24, 25) on the both ends thereof, and the first type of rod like supporting portion is defined as a part which extends between the two frame fixing portions (24, 25), wherein the second type of cable supporting member is provided with two frame fixing portions (26, 27) on the both ends thereof and with two rod like extension portions (28, 29), which extend respectively from the two frame fixing portions (26, 27) to the functional unit side, and the second type of rod like supporting portion is defined as a part which extends between the functional unit side ends of the two extension portions (28, 29), and wherein the two frame fixing portions (26, 27) of the second type of cable supporting member are disposed in a position so as to overlap respectively with the two frame fixing portions (24, 25) of the first type of cable supporting member, when viewed in the up and down direction. a frame, a plurality of functional units disposed on a plurality of stages in an up and down direction and fixed to the frame, and a plurality of external connection cables extending in the up and down direction within the frame of the control center and connecting each of the plurality of functional units with an external device, characterized by a cable supporting structure fixed to the frame and supporting the external connection cables, wherein the cable supporting structure has a rod like supporting portion with a rod like shape which supports the plurality of external connection cables that are arranged in a line in a horizontal direction, with keeping parallel state each other, and extends in the horizontal direction, and the rod like supporting portion is composed of plural kinds of rod like supporting portion (20, 21) whose rows of external connection cables to support are different from each other, and respective kinds of rod like supporting portions (20, 21), which are provided in plural, are disposed, with keeping a space in between, in the up and down direction, wherein the cable supporting structure is composed of plural kinds of cable supporting member (9, 10) which have one by one a kind of rod like supporting portion (20, 21), and respective kinds of cable supporting members (9, 10), which are provided in plural, are disposed alternately, with keeping a space in between, in the up and down direction, wherein the first type of cable supporting member is provided with two frame fixing portions (24, 25) on the both ends thereof, and the first type of rod like supporting portion is defined as a part which extends between the two frame fixing portions (24, 25), wherein the second type of cable supporting member is provided with two frame fixing portions (26, 27) on the both ends thereof and with two rod like extension portions (28, 29), which extend respectively from the two frame fixing portions (26, 27) to the functional unit side, and the second type of rod like supporting portion is defined as a part which extends between the functional unit side ends of the two extension portions (28, 29), and wherein the two frame fixing portions (26, 27) of the second type of cable supporting member are disposed in a position so as to overlap respectively with the two frame fixing portions (24, 25) of the first type of cable supporting member, when viewed in the up and down direction.