Abstract: Based on the mechanism of soil animals reducing soil adhesion and scouring soil, nons-mooth surface electroosmosis was used as a new method to reduce soil adhesion of soil touching parts of terrain-machines. It studied the law and efficiency of reducing soil adhesion and scouring soil influenced by the method of nonsmooth surface electroosmosis. The electrode plate area of nonsmooth surface electroosmosis was designed based on the experimental optimum method.