To provide a bracket structure for vehicle capable of preventing generation of poor painting with a simple configuration without causing cost increases.

The bracket structure 4 for vehicle includes: a convex-shaped mounting surface 4A formed on the top to tighten other components; a through-hole 9 for tightening formed in the mounting surface 4A; and a welding nut 7 provided on the rear side of the mounting surface 4A. The through-hole 9 is made into an elongated hole extending to the side of the welding nut 7. Portions of both sides in the shorter direction of the through-hole 9 of the bracket 4 are joined through the welding nut 7. Additionally, the longitudinal direction of the through-hole 9 is aligned with that of the bracket 4, and both ends of the through-hole 9 in the longitudinal direction are made to be exposed on both sides of the welding nut 7 to be opened as an air vent hole 10.