Abstract: A metallic cabinet includes a bottom board, two lateral boards detachably joined to lateral edges of the bottom board, a lower rear board detachably joined to a rear edge the bottom board, a top board detachably joined to tops of the lateral boards, an upper rear board detachably joined to an upper edge of the lower rear board, a supporting rod detachably joined to front portions of inward sides of the lateral boards at two ends, and at least one door pivoted to the bottom and the top boards at two ends thereof respectively; the above parts are formed with corresponding holes and engaging protrusions shaped such as to be detachable from, and joinable to, each other, and are not joined together when the cabinet is packed for transportation or storage.