Horizontal corrugated steel plate shear wall is comprised of edge frame and horizontal corrugated steel plate. When the stiffness of frame column is insufficient，the out-of-plane buckling failure is prone to occur in advance，and the mechanical properties of embedded plate are not fully exerted. To solve the buckling problem of frame column before the yielding of embedded plate，the method of increasing the stiffness of frame column is adopted. To clarify the interaction mechanism between embedded plate and frame column，optimize the design method of corrugated steel plate，the variable parameter models by numerical simulation are established to study the influence of aspect ratio，plate thickness and opening on the mechanical properties of shear wall. The interaction between embedded plate and frame column is studied according to the mechanical mode，shear distribution and energy consumption distribution. The results show that the mechanical properties of frame column are significantly improved by embedded plate，the aspect ratio of plate has a great influence on the shear distribution，and the thickness of plate has a great influence on the energy consumption distribution. The shear ratio and energy consumption ratio of frame column are significantly increased after the opening，and there is a reasonable combination of the aspect ratio and the thickness of plate to make the overall mechanical properties better. An improved plate-frame-interaction model considering elastoplastic deformation analysis is proposed. Through theoretical derivation and fitting，the formulas of bearing capacity and displacement corresponding to each characteristicpoint of embedded plate and frame column are obtained. The error between theoretical value and simulation value is basically less than 10%，which provides reference for engineering application.