The invention discloses high-efficiency edge cutting equipment for machining kraft paper bags. The equipment comprises an operation table, a top plate, an air cylinder, a connecting plate, a movable plate, a motor I, a cutting wheel, a motor II and conveying rollers; the high-efficiency edge cutting equipment for machining the kraft paper bags is characterized in that the operation table is arranged on the support, the top plate is arranged on a vertical plate, the air cylinder is arranged on the top plate, and the connecting plate is arranged on a piston rod; and the two ends of the movable plate are arranged in limiting grooves respectively, the motor I is arranged on the movable plate, the cutting wheel is arranged on a transmission shaft through an installing ring, and the motor II isarranged on the vertical plate. According to the equipment, the movable plate is arranged to be of a structure capable of moving in the limiting grooves, the positions of the two ends of the movable plate in the limiting grooves are adjusted according to different edge cutting requirements of the kraft paper bags, so that the positions of the motor I, the transmission shaft and the cutting wheel on the transmission shaft can be adjusted; and the application range of the edge cutting equipment is expanded, the labor intensity of operators is reduced, and the working efficiency is improved.