The invention provides an automatic feeding and discharging die cutting machine which comprises a feeding mechanism, a feeding adjusting mechanism, a die cutting mechanism, a discharging mechanism anda box body. The feeding mechanism, the feeding adjusting mechanism, the die cutting mechanism and the discharging mechanism are sequentially arranged on the box body; the discharging mechanism comprises a first conveyor belt, a second conveyor belt, a supporting frame, an air cylinder, positioning racks, a material table, a servo motor and a screw rod; the first conveyor belt is hinged to the second conveyor belt; one side, far from the hinged side of the first conveyor belt, of the second conveyor belt is arranged on the supporting frame; the air cylinder is arranged at the middle part of the upper part of the supporting frame; the positioning racks are arranged at two ends of the upper part of the supporting frame; one end of the material table is arranged in the supporting frame; the servo motor is arranged below the supporting frame; and the screw rod penetrates through the material table to be arranged below the supporting frame and is in threaded connection with the material table. The automatic feeding and discharging die cutting machine can realize the automatic feeding of printing products, the positions of the printing products are automatically adjusted after feeding, during discharging, the printing products are orderly and stably stacked, and are easily collected, and meanwhile, the damage caused by falling of the printing products is avoided.