A body structure of a vehicle includes a coupling member made of fiber reinforced plastic including fibers impregnated with synthetic resin and a pair of rear fixing members that have a bending rigidity higher than the coupling member and fix both end portions in the longitudinal direction of the coupling member to a vehicle body. Boundary portions between the pair of fixing members and the coupling member are formed in both end portions in the longitudinal direction. A distance between the boundary portions on the rear side is different from that between the boundary portions on the front side that extend along neutral axes defined by the lines of intersection between the neutral plane of bending moments of the coupling member and the lateral cross sections of the coupling member when a bending load is input through the pair of rear fixing members to the coupling member.