BODY FLOOR OF VEHICLE

A body floor of a vehicle includes seat rails having seats mounted to the seat rails, a center floor including center side members provided on opposite sides of a tunnel member and a center cross-member connecting the center side members to the tunnel member, a rear floor having a rear side member connected to the center side members, a side reinforcement member provided between the center cross-member and the rear floor to cover the center side members and the rear side member, and a center reinforcement member provided between the center cross-member and the rear floor to cover the tunnel member, where rigidity of peripheral parts of the center floor, the rear floor, and the tunnel member is ensured by the side reinforcement member and the center reinforcement member, and the center floor and the rear floor provide an installation structure for the seat rails.