To provide a mounting shelf constructed to sustain travelability of a sliding front shelf while substantially keeping linearity of a rear shelf upper face plate.

A mounting shelf comprises a front shelf including a front shelf upper face plate 4a for mounting an article and a first wall-type guide part 4b extending downward along the opposite side edges of the front shelf upper face plate 4a and projecting at the front end part, and a rear shelf 5 including a rear shelf upper face plate 5a for mounting an article, an L-shaped rail part 5b formed along the opposite side edges of the rear shelf upper face plate 5a and a rising part 5c extending vertically from the bottom face of the rail part which is parallel with the rear shelf upper face plate 5a at the front end of the rail part. When the front shelf 4 is mounted on the rising part 5c through the first guide part 4b and inserted under the rising part 5c by sliding it back and forth, downward warp of the rear shelf upper face plate 5a is corrected.