The work aims to prepare Ni60 nickel based corrosion resistant coatings on the weld surface of Q235 low carbon steel by laser cladding technology and plasma cladding technology. Corrosion resistance of the sample in 3.5% NaCl solution was tested by weight-loss corrosion and electrochemical corrosion tests. The microstructure morphology, chemical composition, coating phase and electronic structure of corrosion product film on the surface of the corrosion sample were tested by OM, SEM, EDS, XRD and XPS, so as to reveal the corrosion resistance mechanism of Ni60 corrosion-resistant coating.