The invention discloses a plastic profile film laminating device. The plastic profile film laminating device comprises a horizontal sliding groove plate; a sliding block is mounted on the horizontal sliding groove plate, an electric telescopic rod is arranged on one side of the sliding block, the free end of the electric telescopic rod is welded and fixed to the sliding block, and a supporting plate is arranged on one side of the electric telescopic rod; and the supporting plate is fixedly connected with the sliding block through a bracket, a threaded extrusion rod is mounted on the supportingplate, a vertical fixing plate is arranged at the top end of the horizontal sliding groove plate, a bending plate is arranged on one side of the vertical fixing plate, and the bending plate and the vertical fixing plate are of integrated structures. According to the plastic profile film laminating device, the threaded extrusion rod and the electric telescopic rod are arranged, the to-be-laminatedplastic profiles are placed on the supporting plate and fixed through the threaded extrusion rod, then the sliding block is pushed to move at a uniform speed through the electric telescopic rod, so that the operator does not need to pull the plastic profiles, the fact that the plastic profiles can be laminated at a uniform speed is ensured, and the laminating quality is improved.