Abstract: Based on the basic bending equation of laminated panels, using the maximum deflection at the center of the laminated panel as the evaluation criterion for bending stiffness, this study focuses on the bending stiffness characteristics and layup parameter design of laminated panels under different boundary conditions under lateral loads （perpendicular to the panel surface）. Based on the simulation calculation results and theoretical analysis, the following conclusions can be drawn: for simply supported laminated panels with four sides （b>a）, when the value of the side length b is constant, increasing the bending stiffness coefficient D₁₁, that is, laying a layer close to 0° on the outermost side, can significantly improve the bending stiffness; When b=a, increasing the bending stiffness coefficients D₁₂ and D₆₆, that is, laying the ±45° layer on the outermost side, can significantly improve the bending stiffness of simply supported laminated panels with four sides; When the value of edge length b is constant for two pairs of simply supported laminates （b>a）, increasing the bending stiffness coefficient D22, that is, laying a layer close to 90° on the outermost side, can significantly improve the bending stiffness. Changing the value of a has no effect on bending deformation, that is, when b is constant, the bending stiffness of two pairs of simply supported laminates with edge length b>a and b=a has the same variation law; The bending stiffness of a laminated board with one fixed support and two pairs of simply supported laminated boards has the same variation law, but the constraint of one fixed support is less, and the maximum deflection at the center of the laminated board is much greater than that of two pairs of simply supported and four sided simply supported laminated boards.