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The mechanization harvesting of Suaeda-heteroptera-kitag, including threshing and clearing, is difficult because of the high water content and small seeds of Suaeda-heteroptera-kitag. A new method was put forward. By experiment, spike-teeth was used at the feeding part of cylinder teeth of the threshing mechanism,the combination of spike-teeth and arc teeth was used at the middle part, and the combination of spike-teeth and weed board was applied at the weeding part. The cylinder length could not be less than 1100mm, rotating speed was 800r/min, and rotate speed of axial-flow fan was 400～450r/min. Finally, the spherical vibrating screen with the size of 1200 mm×1000mm was obtained by the table experiment of cleaning mechanism.  