Adding nano-diamond in the plating solution, Ni-P / nano-diamond electroless coating was prepared on copper using electroless plating technology. Properties of the coatings can be improved by incorporating nano-diamond in the nickel plating. The effects of incorporating with nano diamond on properties of Ni-P composite coating were investigated. Research results show that the coating quality is better when the diamond concentration is 12 g / L. The incorporation nano-diamond improves the friction and wear resistance and corrosion resistance of the coating.