Abstract: Copper-steel laminated plates have excellent performance, and laser scanning bending can perform flexible forming of various shapes.Studying the influence of different laser processing mechanisms on the surface forming is of great significance. A single factor experiment was conducted on the two factors that have a significant impact on the thickening mechanism, namely laser power and defocus amount, their effects on the bending angle and thickening amount of the plate were analyzed.The most suitable laser parameter combination for thickening mechanism processing was obtained, and based on this, single and dual mechanism experiments were conducted on the formation of the spherical crown surface of the laminated plate. The forming experiment of the spherical crown surface has proven that the scanning method combining temperature gradient mechanism and thickening mechanism has a greater forming amplitude and a more regular forming appearance than the scanning method using a single temperature gradient mechanism. The research results provide experimental basis for in-depth research on the three-dimensional curved surface forming scheme and three-dimensional deformation law of laminated plates.