Abstract: Wear behavior of Ni-Cu-P coating was discussed by changing the parameters such as different medium , concentration of solution , liquid velocity , wear hour and impact angle The results shows that the wear behavior of Ni-Cu-P Coating in 2 % ( wt % ) NaOH medium can reach the best performance. Wear loss increases as concentration of solution increases in dilute hydrochloric acid There is a critical liquid velocity , and wear loss increases with liquid velocity increases , the former dependence of the latter follows the simple exponential relationship Wear loss of the coating reaches the maximum when the impact angle is 45°. Compared to Ni-P coating , Ni-Cu-P coating can improve wear character of the coating