Abstract: The 316L stainless steel bipolar plate for fuel cells was prepared by laser cladding forming process. According to the requirements of bipolar plate channel structure, the quantitative scoring standard of cladding channel was established. The effects of laser power, scanning speed and powder thickness on formability and corrosion resistance of the cladding channel were studied by orthogonal experiment. The results show that the effect of spreading powder thickness, laser power, and scanning speed on the formation of cladding channels decreased in order. The relatively low laser power, high scanning speed, small spreading thickness and low heat input were conducive to obtaining a cladding channel with better formability. Increasing laser power and scanning speed were both beneficial to improve the pitting corrosion resistance of the cladding channel. The better the formability of the cladding channel, the better the pitting corrosion resistance.