The invention discloses a laminating device used for identifying labels. The laminating device comprises a control console, a guide roller, bushings, transmission rollers, a motor, a top plate, an adjusting plate and a press roller and is characterized in that the operating console is arranged on a support, a bearing plate is arranged on the support, limit slots are arranged in vertical plates, the guide roller is arranged between fixing plates through a connecting shaft, the bushings are arranged in the corresponding limit slots, the connecting shafts are arranged at two ends of the transmission rollers, the motor is arranged on the bearing plate, the top plate is arranged on uprights, an air cylinder is arranged on the top plate, the adjusting plate is arranged on a piston rod, a positioning plate is arranged on the adjusting plate, and the press roller is arranged between positioning plates through the connecting shafts. The guide roller is arranged between the fixing plates, partition plates are arranged on the guide roller and can prevent a thin film skewing on the guide roller, and laminating quality in identifying the labels is improved.