Local thinning of materials on the both sides of countersunk rib for 5182-H19 aluminum alloy can lid during forming process is a critical problem, and the deformation resistance of product is severely reduced. In order to ensure the quality of canned packaging, the can lid was produced by material with large thickness, and the production cost in the enterprise was greatly increased. Through researching on the forming process of the aluminum alloy can lid, a kind of reverse forming die with compound air pressure for the can lid was designed. Then, the die completes the multiple processes at one time to form the super hard 5182-H19 aluminum alloy can lid with thickness of only 0.218 mm, and the thinnest thickness of materials on the both slope sides of countersunk rib increases from 181.7 μm to 197.0 μm. Compared with the original forming technology, the local thinning rate of the can lid decreases from 16.7% to 9.6%. Thus, the above process is beneficial to improve the deformation resistance of the can lid, achieve the light weight of product and reduce the production cost which has high practical value.