The invention discloses a display panel and a fabrication method thereof. By the display panel and the fabrication method thereof, the problem that a connection line at a side edge of the display panel of the prior art is easy to break is solved. The display panel comprises a substrate, multiple first wires, multiple second wires, a transition body and multiple connection lines, wherein the substrate comprises a display surface, a display back surface and a side surface, the display surface and the display back surface are opposite to each other, the side surface is connected with the displaysurface and the display back surface, the multiple first wires are arranged on the display surface of the substrate, the multiple second wires are arranged on the display back surface of the substrate, the transition body is arranged at the side surface of the substrate and comprises a first end part and a second end part, the first end part is opposite to the first wires, the second end part is opposite to the second wires, outer surfaces, deviating from the side surface, of the first end part and the second end part are arc-shaped at corner positions, the multiple connection lines cover theouter surface of the transition body and are used for electrically connecting the first wires and the corresponding second wires.