The utility model discloses a printing module paper feeding structure, which belongs to the technical field of thermal printers and comprises a thermal printer shell, a paper containing bin, a
thermal paper roll, a conveying rubber roller, a mounting side plate, a heat dissipation roller, a heat dissipation convex plate and a through hole. Heat generated when the heat dissipation roller rubs with the
thermal paper roll can be discharged outwards, the
thermal paper roll is prevented from developing due to the fact that the temperature of the heat dissipation roller is too high, and when the temperature in the printer is high, the temperature on the thermal paper roll can be radiated into the heat dissipation roller through the heat dissipation roller and the through holes formed in the surface of the heat dissipation roller, so that the heat dissipation effect is improved. And the heat dissipation effect is better through the heat dissipation protruding plates, the lower pressing roller and the jacking roller can have the same heat dissipation effect through the hollow interior of the lower pressing roller and the jacking roller and the two sides of the lower pressing roller and the two sides of the jacking roller penetrate through the second supporting arms and the first supporting arms, and the heat dissipation effect of the lower pressing roller and the jacking roller is better through the arrangement of the heat dissipation protruding plates.