Abstract: The plating bath formula and operation parameters for electroless deposition of Ni-Mo-P ally with different crystal structures were studied.Corrosion resistance of the Mo-bearing electrolessly deposited alloy in NaCl solution has also been investigated to evaluate the role of Mo.It is found that increasing the Mo content in the deposit can remarkably enhance its corrosion resistance and the deposit with amorphous structure is more corrosion resistant than crystalline deposit.