To provide a desk provided with an illuminator such that a desk lamp is positioned at the rear edge part of the desk and erected to attain a form capable of utilizing a desktop space at maximum in the constitution of arranging a shelf set to be placed on top on the top plate of the desk and the angle of the illumination of the desk lamp is easily adjusted in a wide range.

In this desk provided with the illuminator such that a shelf 3 to be placed on top is arranged on the top plate 2 of the desk 1, at the shelf 3 to be placed on top, an installation space (interval part 3i) which is provided by lacking in at least a part of the back plate 3 is formed so as to position and arrange the desk lamp 4 at the rear part of the desk 1. At the position inside the installation space, the lower end part of the column 4a of the desk lamp 4 is freely turnable back and forth or to the left and right and it is erected on the top plate 2 of the desk 1 or a lower shelf plate 7 of the shelf 3 to be placed on top.