The sunflower seed shelliong machine can easily shell pumpkin seeds. It solves the gap existing sheller is difficult to accurately adjust, low production efficiency, high crushing rate; shelling machine has a barrel as outer cover, the outer barrel is arranged in the inner sleeve, the inner sleeve of a bearing seat, the bearing seat is provided with a rotating shaft, the rotating shaft a wheel in the upper part of the outer barrel, an upper cover is arranged at the lower part of the upper cover, a fixed wheel and the wheel to match, which is on the cover is composed of an inner ring and an outer ring between the inner ring and the outer ring is in threaded connection, the thread for adjustment of the gap between the fixed wheel and the driven wheel; a plurality of the scale positioning holes in the outer ring, a pointer on the inner ring, between the fixed wheel and the wheel trimmer; its advantage is: the adjustment of high precision, simple and convenient, so that the sunflower huller we can adapt and Sunflower varieties with different varieties and different plumpness, and improve the production efficiency.