Abstract: Aiming at the problem of stamping orange peel defect of DX51D+Z low carbon aluminum killed steel galvanized home appliance sheet, the chemical composition, hot-rolling process, and cold-rolling galvanizing process were compared and analyzed.The results show that the stamping orange peel defects of galvanized sheet are affected by aging, and they are all related to the existence of solid solution carbon atoms; the hot-rolling coiling temperature, galvanizing soaking temperature and smoothing elongation have an important influence on the aging caused by solid solution carbon atoms.Reducing the content of solid solution C and N, ensuring the hot-rolling coiling temperature and the precise control of the galvanizing soaking temperature and the stable control of the smoothing elongation can effectively improve orange peel defects.