The invention provides a special machine for stretching honeycomb plates. The special machine comprises a base, a driving shaft, a driven shaft, a transmission sprocket set, a motor sprocket, a motoradjusting bolt, a geared motor, a first connecting bearing and a pair of moving rods. An output shaft of the geared motor is connected to the motor sprocket, sliding rails are installed on a track inparallel, the sliding rails are provided with sliding slots, the moving rods walk on the sliding grooves in the mode of being perpendicular to the sliding rails through rollers, a third transmission sprocket is installed between first transmission sprockets on the driving shaft and connected with the motor sprocket through a first chain, the first transmission sprockets are connected with a secondtransmission sprocket through a second chain, and the moving rods are sleeved with multiple fixing mechanisms for fixing the honeycomb plates. The two ends of the honeycomb plates to be stretched arefixed by the fixing mechanism, the geared motor is started, and the two moving rods are moved close to each other or away from each other so as to stretch and retract the honeycomb plates.