An electroluminescent display and illuminating device and a manufacturing method thereof are provided. Layers of light-emitting devices of an electroluminescent display and an electroluminescent illuminator are assembled, and the two devices share an electrode in a middle of a laminated structure, thereby realizing a display function on one side of the device and realizing a illumination function on the other side of the device, so that a shape design of a product can be more flexible.