A light-emitting device including an anode, one or more organic compound layers containing at least a light-emitting layer, and a transparent cathode on a flexible support substrate having a linear thermal expansion coefficient of 20 ppm/ C. or less, water permeability of 0.01 g/m²day or less, and oxygen permeability of 0.01 cc/m²dayatm or less. The flexible support substrate is constituted by a metal foil provided with an insulating layer on one or both surfaces thereof.