Safety belt buckle and vehicle

The invention provides a safety belt buckle. The safety belt buckle comprises a lock head; a first bracket which comprises a first bracket body which is formed into a flat plate shape; a mounting part which is formed at the upper end of the first bracket body and is connected to the lock head; a second support which comprises a second support body which is provided with a T-shaped groove, and the T-shaped groove forms a moving track for the first support to move up and down; and a first fixing part which is formed at the lower end of the second support body and rotatably connected to the vehicle seat, a first magnet is arranged on the first support, a second magnet is arranged on the second support, and the magnetic pole directions of the first magnet and the second magnet are opposite; and the first magnet is moved upward by a repulsive force between the second magnet and the first magnet. The safety belt buckle is a self-adaptive magnetic safety belt buckle and is simple in structure, the length of the safe