The invention relates to a glass board processing precision automatic correction device and method. Through the glass board processing precision automatic correction device and method, the technical problems that an existing conveying device is low in moving precision and poor in reliability are solved. The glass board processing precision automatic correction device comprises cross beams, a servo motor, a synchronous belt wheel, a screw synchronous belt wheel, a screw, a nut, a sliding plate, a first bearing seat, a second bearing seat, a first bearing, a second bearing, a first linear guide rail, a second linear guide rail, a laser thermoscope, a controller and a drive. The servo motor is connected with the cross beams through servo motor installation seats. The synchronous belt wheel is connected with an output shaft of the servo motor. The screw synchronous belt wheel is connected with the screw. The synchronous belt wheel and the screw synchronous belt wheel are connected through a synchronous belt. The nut is connected with the screw. The sliding plate is connected with the nut through a nut seat and is provided with a conveying sucker assembly installation part. The first linear guide rail and the second linear guide rail are installed on the cross beams correspondingly. Sliding blocks on the first linear guide rail and the second linear guide rail are connected with the sliding plate. The glass board processing precision automatic correction device and method can be widely applied to the technical field of glass board processing.