After being modified and dispersed uniformly in solution, the Ni-P-carbon nanotube composite coatings are prepared by chemical deposition. The surface morphologies of composite coatings are analyzed with a scanning electron microscope and the tribological properties of composite coatings are investigated. The results indicated that the addition of carbon nanotubes increased the microhardness and improved mechanical properties of the Ni-P composite coating significantly. Carbon nanotubes composite coatings exhibited lower friction coefficient and high wear resistance in comparison with Ni-P-SiC composite coatings.