Abstract: An LED layout structure has a substrate, at least one light emitting chip mounted on a front surface of the substrate. A first conductive wire is formed on the front surface of the substrate to connect with a first pole of the light emitting chip, and then the first conductive wire extends to a back surface of the substrate to form two terminals on the back surface. At least one second conductive wire having a first terminal formed on the front surface of the substrate to connect with a second pole of the light emitting chip, and then the second conductive extends to the back surface of the substrate and back to the front surface to form a second terminal. By applying the LED layout structure to form an LED array arrangement, the wire jumping problem is effectively avoided.