The present invention relates to the technical field of metal lamp shades, and more particularly, relates to a detachable and foldable assembled metal lamp shade, which comprises a shade body, an end cover, and a handle. The shade body is a tubular structure provided with a top opening or openings at both ends, and includes at least one flexible metal plate. First and second side edges are vertically disposed on both sides of the flexible metal plate, and the first and second side edges are detachably connected to enclose the flexible metal plate to form the shade body. The flexible metal plates can be assembled into the shade body through a detachable connection of the first and second side edges, providing a convenient assembly method and ease of disassembly into flexible metal plates for portability.