Building fence convenient to disassemble and assemble

The building fence comprises a first J-shaped plate, a connecting plate, a second J-shaped plate, a notch, a color steel plate and a triangular plate, the top end of a vertical plate of the first J-shaped plate is fixedly connected with one end of the connecting plate, the other end of the connecting plate is slidably connected with the interior of the top end of a vertical plate of the second J-shaped plate, and the second J-shaped plate and the first J-shaped plate are arranged in a mirror image mode; the color steel plate is fixed between the J-shaped plate I and the J-shaped plate II; a notch is formed in the lower portion of the outer side of the first hook table of the J-shaped plate, and the interior of the notch is fixedly connected with one side of a triangular plate. According to the utility model, not only is the early-stage assembly work facilitated, but also the later-stage disassembly work is facilitated, meanwhile, after disassembly, waste of parts is avoided, and the parts can be recycled, so