Wall deformation joint plugging device

The utility model relates to the technical field of building deformation joints, in particular to a wall deformation joint plugging device which comprises two aluminum alloy bottom plates fixed to the edges of two shear walls, a welding piece is fixed to the opposite faces of the aluminum alloy bottom plates in a welding mode, a sliding piece is movably connected to the two welding pieces and can slide, and the sliding piece is connected with the aluminum alloy bottom plates in a sliding mode. A fire-retardant belt is arranged below the sliding piece, the two ends of the fire-retardant belt are fixedly connected to aluminum alloy bottom plates, an aluminum alloy panel is arranged above the two aluminum alloy bottom plates, the outer sides of the aluminum alloy bottom plates warp upwards, the two side edges of the aluminum alloy panel warp downwards, and the aluminum alloy bottom plates are completely covered with the aluminum alloy panel. The aluminum alloy panel is connected with the sliding piece through a