The invention discloses a light-emitting device, including a base plate, a first conductive layer, a second conductive layer, a self-light-emiting layer and a first auxiliary conductive pattern layer. The first conductive layer and the second conductive layer are both arranged on the base plate. The self-light-emiting layer is arranged between the first conductive layer and the second conductive layer, and defines a light-emitting area on the base plate. The resistance of first auxiliary conductive pattern layer is contacted is smaller than that of the first conductive layer. The ratio of the circumference (micrometer) of the first auxiliary conductive pattern layer at the light-emitting area to the area of the (micrometer<2>) light-emitting area is not more than 0.0262 (1/micrometer).