The utility model discloses a minitype sunflower threshing machine. The minitype sunflower threshing machine comprises a threshing roller (4) and concave fence-shaped brackets (6), wherein the threshing roller (4) is arranged at the upper end of a rack (1) and is in the transverse direction relative to the feeding direction, the concave fence-shaped brackets (6) are arranged below the threshing roller, and a fence is in the longitudinal direction relative to the threshing roller (4). The minitype sunflower threshing machine is characterized in that the a plurality of transverse steel bars (5) are fixed on the circumference of the surface of the threshing roller (4) at intervals, the number of the concave fence-shaped brackets (6) is at least two, the concave fence-shaped brackets (6) are arranged abreast, the rear edge of each fence-shaped bracket (6) is hinged to a rear cross arm (2) of the feed end of the rack, the front edge of each fence-shaped bracket (6) is connected with a front cross arm (3) at the discharge end of the rack. The minitype sunflower threshing machine is simple in structure and low in manufacturing cost. Most importantly, the threshed rate of the minitype sunflower threshing machine almost reaches 100%, threshing efficiency is high, and the crushed rate of grains is zero.