Abstract: An inner panel of a door body includes an inner wall extending in a front-rear direction of a vehicle body on an inner side in a vehicle width direction, a connection wall extending toward an outer side in the vehicle width direction from the inner wall, and an outer wall extending in the front-rear direction of the vehicle body from an outer end of the connection wall in the vehicle width direction and joined to an outer panel. A door beam includes an arch-shaped beam body and a stay located on the outer side in the vehicle width direction with respect to an end of the beam body in a longitudinal direction. The rear end of the beam body is fixed to the inner wall. The stay has a front end fixed to the beam body and a rear end fixed to the outer wall.