The utility model discloses a double-flying dragonfly outgoing line arranging structure of a 220 kilovolt outdoor GIS. Due to the width limitation of an outgoing gantry of a common outdoor GIS, the overall size of an outgoing line side of a substation is not decreased even the GIS device is used. The 220 kilovolt double-flying dragonfly outgoing line arranging structure is characterized in that an outgoing line framework comprises a vertical type steel pipe rod and six outgoing line cross arms formed on the steel pipe rod; all the outgoing line cross arms are perpendicular to the steel pipe rod; the six outgoing cross arms are distributed in upper, middle and lower layers; each layer is formed by two outgoing line cross arms respectively arranged on two sides of the steel pipe rod; and the outgoing cross arms on any layer are staggered from the outgoing line cross arms on the same sides of the other two layers in space. According to the utility model, the outgoing line framework of a power distribution device of the outdoor GIS is simplified, the horizontal size is decreased, floor area can be remarkably reduced, and length of a bus of the 220 kV GIS is decreased.