The utility model discloses a wire arrangement rack supporting rod which is below the wire arrangement rack and is connected with the same. The wire arrangement rack supporting rod comprises the components of a telescopic rod of which one end is hinged with a side slide rail, and a fixing rod which is hinged with two side slide rails. The fixing rod is axially provided with a chute. The other end of the telescopic rod is movably connected with the chute internally. The chute deflects to the-other-side slide rail which is hinged with the telescopic rod. Furthermore the chute starts from the fixing rod. One end of the telescopic rod slides in the chute of the fixing rod. On condition that the least length of the telescopic rod is unchanged, the supporting rod can satisfy a supporting requirement for a cabinet with a relatively large depth. Furthermore when a drawer is closed, the telescopic rod can be retreated normally.