Abstract: Aiming at the problems of deep-drawing automobile panels using traditional zinc-iron coated sheet materials for drawing and forming, they were easy to be cracked, wrinkled, napped and zinc liquated. The front door inner panel of a certain car model was used as the research object, the zinc-iron coated sheet and zinc-aluminum-magnesium coated sheet were used respectively for drawing numerical simulation under the same working conditions, the forming effect difference between zinc-aluminum-magnesium coated sheet and zinc-iron coated sheet was compared according to the forming limit diagram, thinning rate, maximum failure, wrinkle factor, material inflow and tooling wear. The analysis found that when the process parameters remain unchanged, the zinc-aluminum-magnesium-coated sheet had a larger forming safety margin, material inflow, surface defect height and stroke volume before tooling failure, smaller thinning rate and maximum failure compared to the zinc-iron coated sheet. Without adjusting the process die surface, only increasing the blank holder force, the zinc-aluminum-magnesium coated sheet obtained a better forming quality than the zinc-iron coated sheet. The results of finite element analysis were used for die tryout, and the front door inner panel part without cracking, wrinkling, napping, dezincification and other forming defects were obtained. Studies have shown that the application of zinc-aluminum-magnesium coated material to the front door inner panel can effectively solve the problem of low drawing safety margin, and can reduce the frequency of defects such as part napping and dezincification, improve the stability of mass production, and make the cost down.