The utility model discloses a vehicle draw beam, including box structure roof beam and assembly welding in the end plate of box structure beam -ends portion, tip that box structure roof beam and end plate are connected is tubaeform open structure be provided with on the end plate with the uncovered assorted opening of box structure beam -ends portion the opening outside assembly welding of end plate has the seat of impact, it forms frame construction by roof, impact seat web and backup pad assembly welding to strike the seat. The utility model discloses an uncovered formula draw beam structure, an increase draw beam and an impact seat opening angle, body construction permits coupling wobbling angle when having improved the vehicle through little curve and S type curve, satisfies the vehicle and passes through the curve running requirement, simultaneously, it is lighter that the frame -type of the whole assembly welding through special design strikes the seat dead weight, maintains more simple, convenient, and its structure size and intensity homoenergetic satisfy the requirement that railway freight car made and utilized.