An electronic apparatus with a detachable cover is proved. The present invention is possible to maintain a satisfactory outward appearance when the cover is attached to the apparatus, and to improve the structural body of the apparatus in terms of strength and formability without having to diminish the inner space for built-in mounting components. According to the present invention, an electronic apparatus having a cover which is attached to an outside of a structural body and at least a peripheral edge portion of which is bent inwards, is characterized in that the cover has a plurality of ribs each of which has a first portion protruding from a predetermined region including a part of a crease on an inner side and crossing the crease as seen from the inner side of the cover, and a second portion crossing the first portion, with the first portion and the second portion being integrated with each other, and the structural body has a plurality of holes being fit-engaged with the ribs at positions corresponding to the plurality of ribs.