LOWER VEHICLE-BODY STRUCTURE OF VEHICLE

A side sill constituting a vehicle body comprises a side sill outer and a side sill inner. Each of an upper-side side face portion (upper face portion) and a lower-side side face portion (lower face portion) of the side sill inner comprises a second bending portion (bending portion) being formed by each of the upper face portion and the lower face portion bent toward an inside of the side sill, an upper-side slant face portion and a lower-side slant portion which respectively extend toward the side sill outer in an oblique direction such that a width, in a vertical direction, of the side sill inner gradually increases, and a second upper face portion and a second lower face portion (vehicle-width-direction face portions) which respectively extend in a vehicle width direction toward an inward side, in the vehicle width direction, from the second bending portion.