Display device and peripheral line structure thereof

The invention discloses a display device and a peripheral line structure thereof. The display device includes a substrate and the peripheral line structure, wherein the peripheral line structure is arranged on a peripheral area of the substrate and includes a common electrode layer, a static protection diode, an insulation layer, a first lead and a second lead, the common electrode layer is electrically connected with a pixel unit of a display area of the substrate and is arranged between the static protection diode and the pixel unit, the common electrode layer is covered by the insulation layer, the first lead is arranged on the insulation layer and crosses the common electrode layer, two ends of the first lead are respectively electrically connected with the static protection diode andthe pixel unit, the second lead is arranged on the insulation layer and crosses the common electrode layer, two ends of the second lead are respectively at the position between the static protection diode and the common elect