The bearing capacity after buckling mainly refers to the member after local buckling can still continue to carry the ability to occur mainly in thin-walled members, such as cold-formed thin-walled steel, in the calculation of the use of effective width method to consider the bearing capacity after buckling.The size of the bearing capacity after buckling mainly depends on the width-thickness ratio of the plate and the edge of the plate constraints, the larger the width-thickness ratio, the better the constraints, the higher the bearing capacity after buckling.In the analysis method, the current domestic and international norms mainly use the effective width method.However, the influencing factors considered in the calculation of the effective width are different in each country’s specification.