Building sound insulation wall

The utility model relates to the technical field of sound insulation walls, and particularly discloses a building sound insulation wall which comprises a mounting base, a sound insulation wall body is arranged at the top of the mounting base, a damping box is arranged at the bottom of the surface of the sound insulation wall body, and a movable plate is arranged at the bottom of an inner cavity of the damping box. Movable grooves matched with the movable plate are formed in the bottoms of the two sides of the inner cavity of the damping box, connecting rods are arranged on the two sides of the bottom of the movable plate, and the bottoms of the connecting rods penetrate through and extend to the bottom of the damping box. When a vehicle collides with the anti-collision plate, impact force is transmitted to the connecting rod through the anti-collision plate, the impact force is transmitted to the movable plate through the connecting rod, the movable groove in the damping box is matched with the movable plate