The utility model relates to the technical field of plastic deformation of 7xxx series aluminum alloy, in particular to a 7xxxx series aluminum alloy wide-width high-rib thin-wall plate which comprises a bottom plate, a plurality of reinforcing ribs are arranged on the bottom plate, the reinforcing ribs and the bottom plate are integrally formed, and the reinforcing ribs are arranged on the bottomplate at intervals. The thickness of the bottom plate ranges from 1.0 mm to 6.0 mm, the width of the bottom plate ranges from 700 mm to 2000 mm, the rib height of the reinforcing ribs ranges from 5 mm to 95 mm, and the ratio of the rib height of the reinforcing ribs to the thickness of the bottom plate ranges from 8 mm to 40 mm. The width of the 7 * xx series aluminum alloy wide-width high-rib thin-walled plate is larger than that of a wide-width high-rib thin-walled plate which can be produced by an extruder with the same tonnage, and the extrusion forming target of the wide-width high-rib thin-walled plate can be achieved by adopting a low-tonnage extruder.