Ni-Cr-Mo alloy coatings are prepared on Q235 steel surface by using a continuous diode laser. The assisted thermal treatments of these coatings are made under pulsed currents with different processing time, which improves the quality and property of coatings. The microstructure, phase composition as well as the mechanical and anticorrosion properties of coatings are investigated. The results show that the pulsed current processing is beneficial to promoting the precipitation of eutectic structures on the grain boundaries of laser cladded coatings. The precipitation amount of eutectic structures increases with the increase of processing time, and the hardness within the depth around 0.1 mm away from the coating surface increases as well, however, the anticorrosion property of coatings increases first and then decreases.