The authors examined friction and wear characteristics of electroless Ni based alloy platings under oil lubricating condition with ring-on-disk test machine. Electroless Ni-P alloy plating, electroless Ni-B alloy plating and electroless Ni-P-B alloy plating were employed. In case of the combination of the electroless Ni-B alloy plating and the electroless Ni-P-B plating the wear occurred in the lowest contact pressure. The friction behavior was the most stable in case of the combination of the electroless Ni-B alloy plating and the electroless Ni-P alloy plating. The friction coefficient of the self-mated electroless Ni-P-B plating was small, while the wear was comparatively large.