Aluminum plate with fixing piece

The utility model relates to an aluminum plate with fixing pieces, which comprises an aluminum plate body, supporting plates are fixed on the upper portion and the lower portion of the back face of the aluminum plate body, T-shaped sliding ways are arranged on the rear sides of the supporting plates in the front-back direction, a plurality of T-shaped sliding blocks are arranged in the T-shaped sliding ways, a screw rod is fixed on the outer side of each T-shaped sliding block, and the fixing pieces are fixed on the outer sides of the screw rods. Corner wrapping plates are fixed to the four corners of the aluminum plate body, protective pressing edges for pressing the reflective film are arranged on the front sides of the corner wrapping plates, and pressing turnups for pressing the supporting plates are arranged on the rear sides of the corner wrapping plates. The supporting plate is fixed on the back face of the aluminum plate body, the screw rods and the locking nuts which can adjust positions are arranged