The photoelectric welding system (hybrid laser-arc welding system) is a new generation of intelligent welding equipment that integrates a high-energy laser beam with an electric arc heat source. Through the precise spatiotemporal coupling of these dual heat sources, it achieves a synergistic "1+1>2" welding effect. This system combines the deep penetration and high-speed advantages of laser welding with the filler capability and formability of arc welding, making it the core solution for welding medium-thick plates, highly reflective materials, and precision structural components.