Abstract: This paper mainly introduced the separating and cleaning of the rice seeds with roll type electrostatic separator of seed and their test results in the laboratories and in the experimental fields. The results showed that the electrostatic separator can select the seeds according to the vitality, so the seeds separated by it are most vital. Because the process of electrostatic separation of seeds is also the process of high voltage electrostatic field treatment on the seeds, it can not only increase the sprout percentage and the potentiality of seeds but also raise the per unit yield. The effect of the test results in significance is good.