The cumulative plastic deformation and microstructure of 0Gr18Ni9Ti nickel-based coating materials under different impact frequencies were compared and analyzed on the self-developed cam multi-impact tester. The results show that the larger the impact frequency is, the greater the cumulative plastic deformation is, and the finer the microstructure is at the same depth, but the plastic deformation becomes slower as the impact frequency increases proportionally, and when the impact frequency increases to a certain value, no plastic deformation occurs, and the change of microstructure becomes smaller and smaller. Impact frequency is an important factor to study the accumulative plastic deformation mechanism of 0Gr18Ni9Ti Ni-based coating material under low stress and multiple impact.