Due to difference in the physical property between the base layer steel and the cover layer steel, laser bending area characteristics of the dissimilar metal laminated plates are different with the single sheet. Metallographic structures of laser bending areas in stainless steel-carbon steel laminated sheets under different accumulative line energy are analysed in order to study heat conduction mode between the layers. By aking use of IPP image processing software to divide the heat-affected zone (HAZ), then energy transfer mode is analyzed. Heat transfer rate slows down because of thermal conductivity difference between the layers. Heat-affected areas present flat parabolic graded distribution in the mild carbon steel layer, and heat accumulation occurs on the lower surface. Bending angles of laminated sheets are determined by plastic deformation area and temperature gradient between the layers affected by heat conduction mode. Studies of heat conduction mode of stainless steel-carbon steel laminated sheets provide the basis of theory and experiment for better bending precision and quality.