Fabricated building sound insulation wall

The utility model discloses an assembly type building sound insulation wall, two mounting plates are horizontally arranged, a building wall body is vertically arranged above the mounting plates, a guide hole is formed in the middle of the bottom surface of the building wall body, fixing holes are formed in the two sides of the guide hole, the middle of the upper surface of each mounting plate is connected with a guide plate, and the guide plates are connected with the mounting plates. The two sides of the guide plate are fixedly connected with two sets of fixing plates, the top end of the guide plate extends into the guide hole, the top ends of the two sets of fixing plates extend into the two sets of fixing holes correspondingly, two sets of through openings are formed in the outer surfaces of the two sides of the building wall, and fixing bolts are arranged in the two sets of through openings correspondingly. The side faces, away from each other front and back, of the two sets of fixing plates are each prov