STRUCTURAL MEMBER

The present disclosure provides a structural member comprising an edge portion Tand an edge portion Topposing the edge portion Tin plan view in height direction (Z axis direction); when an axis direction connecting the edge portion Tand the edge portion Tis regarded as an X axis direction, the structural member includes, along the X axis direction, a region A including the edge portion T, and a region B located on the edge portion Tside than the region A and including the edge portion T; in a cross-section perpendicular to the X axis direction, the region A includes a closed cross-section portion A whose outer rim shape is one closed cross-section A; and the region B includes a closed cross-section portion B satisfying a predetermined (i) or (ii).