The utility model discloses an improved feeding system of a rod pressing machine. The improved feeding system comprises a dry material feeding device which is arranged adjacent to the feeding end of a feed screw. The dry material feeding device comprises a box overturning mechanism, a hopper and a feeding airlock. According to the box overturning mechanism, a speed reducer drives a rotating shaft to rotate a box which is fixed on the rotating shaft, so that a drying material in the box is poured into the hopper. The hopper is communicated with the feed screw, the hopper is arranged below the overturned box which is overturned in place so as to carry the dry material which is overturned down from the box, and the feeding airlock is arranged at the discharging end of the hopper. According to the improved feeding system of the rod pressing machine, based on an existing feeding system of the rod pressing machine, the dry material feeding device is additionally arranged on the feed screw, at the tailing stage of production, the box overturning mechanism of the dry material feeding device is started, the dry material is poured into the hopper, due to even feeding of the feeding airlock, the dry material is evenly and continuously fed to the feed screw, so that the humidity of the fed material is lowered, and the phenomenon that overwetting rod materials block a forming head is completely avoided.