Generally, the powders that used in laser cladding are atomized. To explore new technology the powders used for laser cladding, atomized powders of 19Cr-14Ni type of stainless steel (mixed by element powders) are mechanically alloyed for 45 h. Then, the two kinds of powders are cladded on 45# steel. Finally, X-ray diffraction (XRD), scanning electron micrscope (SEM)/energy dispersive spectroscopy (EDS) and electrochemical methods are utilized to investigate the phases composition, microstructure and corrosion behavior of the two laser cladded coatings method. The results show that the grains of laser cladded coating with mechanical alloying (MA) powders are much finer than that of the coating with atomized powders. Due to the formation of net-like structure and the decrease in Cr element segregation between dendritic crystals, the corrosion resistance of MA laser coating is improved. However, its microhardness is slightly decreased.