The two coatings of Ni-P amorphous and nanocrystalline structure were obtained by electroless plating. Moreover the as-deposited coatings were treated with stress-off annealing of low temperature. The composition and structure of the coatings were analyzed. Effects of anneal process and coating organize structure on tribological property of coating, as well as its inner mechanism, were studied. The result shows that the tribological property of Ni-P nanocrystalline coating is superior to that of amorphous one at the same condition(only changing the complex agent in the bath),and different wear mechanism between the two coatings is discovered too. The excellent friction and wear alleviation coating with higher micro-hardness is obtained owing to the proper anneal process.