The invention provides an efficient insulating plate cutting device. The efficient insulating plate cutting device comprises a base, a conveying mechanism, cutting mechanisms, fixing mechanisms and acontroller, wherein the conveying mechanism is arranged in the middle of the base; insulating plates successively pass through the cutting mechanism A, the fixing mechanism A, the cutting mechanism Band the fixing mechanism B along the conveying mechanism; the conveying mechanism comprises a conveying roller group A and a conveying roller group B; the conveying roller group A is driven by a motorA; the conveying roller group B is driven by a motor B; the conveying roller group A and the conveying roller group B are separately arranged in the front and at the rear of the cutting mechanism A;a photoelectric sensor is arranged at the tail end of the base; and the controller is connected with the motor A, the motor B, the cutting mechanism A, the cutting mechanism B, the fixing mechanism A,the fixing mechanism B and the photoelectric sensor. The controller controls the motor A and the motor B to be started at different times, meanwhile, by cooperation of the photoelectric sensor, the insulating plates are cut automatically, the conveying roller group A heats and dehumidifies the insulating plates while conveying, the cutting force of the insulating plates is reduced, and the cutting efficiency is improved.