According to various embodiments of the present invention, an electronic device may comprise: a housing comprising a first surface, a second surface, and a side surface surrounding the space between the first surface and the second surface; and a display provided in the space and exposed via the first surface. At least one of the first surface, the second surface, and the side surface may comprise: a metal alloy including at least one pore in the surface; a metal member occupying at least a portion of the inner space of the at least one pore; and an oxidation film which contacts the metal member and at least a portion of the metal alloy.