A housing of an electronic device and an electronic device are provided. The housing of an electronic device including at least one plate includes a first surface coupled to at least a portion of a plate of the at least one plate and facing a rear surface of the plate, and a member comprising a second surface being substantially perpendicular to the first surface and facing a side surface of the plate, and wherein the first surface comprises a protrusion protruding from the first surface toward the plate by a predetermined height, a first recess formed in from the first surface by a predetermined depth, and a second recess formed in from the first surface deeper than the first recess.