Abstract: By changing the impact medium conditions in the mechanical galvanizing process, the impacts of three different impact media:glass beads, zirconium silicate beads and zirconia beads on the quality of the coating under the same coating area were studied.The coating was analyzed from the surface morphology, coating hardness, coating bonding strength and coating corrosion resistance.The results show that the surface of the specimen prepared with zirconium silicate beads and zirconium oxide beads as the impact medium is smooth and flat. The dense area of the coating surface is large. The average hardness of the coating increases by 8.8 HV and 13.6 HV, respectively, and the bonding strength of the coating increases to level 0, and the corrosion resistance improves.