:以圆筒式短茎秆清理装置的搅龙和筛筒为研究对象 ,运用回归分析法进行试验 ,在此基础上建立了该装置清选性能的数学模型 ,优化确定了其最佳运动参数 ,使籽粒清洁率达到 99.6 % ,清选损失率达到0 .11%。并分析了运动参数对该装置清选性能的影响规律 Taking the auger and the sieve drum of the cylinder short stalk cleaning device as the research object, the regression analysis method was used to carry on the test. On this basis, the mathematical model of the cleaning performance of the device was established and the optimum kinematic parameters , So that the grain cleaning rate of 99.6%, the loss rate of cleaning up to 0.11%. The influence of movement parameters on the cleaning performance of the device was analyzed