To provide a mirror with built-in EL illumination convenient in portability and installation for illuminating brightly an object to observe the object easily by the mirror, by building a very thin and non-bulky illuminating EL element in the mirror, in order to eliminate requirement for preparing a new illumination, when the object is observed using the mirror in a dark place.

In this organic or inorganic EL element of a very thin type electroluminescent element, a non-luminescent part is formed in one portion on a transparent substrate, and the element has structure of which the specular electrode portion on a backside or the specular film is seen through from the non-luminescent part, alternatively, structure of which the one portion is made transparent in a usual mirror to be bonded with the EL element on the backside.