The utility model relates to an I-wheel of a packing wire cable tubular structure. The tubular structural I-wheel which is made of steel pipes and is formed by welding the steel pipes in a given shape like a bird cage is mainly formed by welding annular spokes at two side surfaces and eight transverse bracings playing the supporting effect. The annular spoke consists of an outer ring pipe, an inner ring pipe, a spoke and a bushing, the inner ring pipe is concentric with the bushing, eight long spokes and eight short spokes are uniformly distributed in the circumferential direction, and the inner ring pipe is attached to the inner side of the spokes and is firmly welded. The eight transverse bracings are not only welded with the inner rings, but also are welded with the spokes.